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Matin Saiyed asked a question
Subject: Physics, asked on on 18/10/16
A square plate of mass M and length of edge equal to 2a. It's MI about its centre of mass axis perpendicular to its plane is lo. Four identical disks are cut from the plane. The MI of the leftover square about same axis is
Laiba asked a question
Subject: Physics, asked on on 17/4/18
Solve this.
Q.12. In the given figure, a = 15 m/s2 represents the total acceleration of a particle moving in the clockwise direction in a circle of radius R = 2.5 m at a given instant of time. The speed of the particle is :-


(1) 5.7 m/s
(2) 6.2 m/s
(3) 4.5 m/s
(4) 5.0 m/s
Akhil Kamat asked a question
Subject: Physics, asked on on 17/4/17
A mass m moves with a velocity v and collides inelastically with another identical mass. After collision the first mass moves with velocity v/root3 in a direction perpendicular to the initial direction of motion. Find the speed of the second mass after collision
A Pal asked a question
Subject: Physics, asked on on 23/1/17
Define Moment of Inertia. State its SI unit and dimensions.
Hritik Mistry asked a question
Subject: Physics, asked on on 24/11/17
A small cube if mass m slides down a circular path of radius r cut into a larger blockM. Tests on a table and both blocks move without friction the blocks ate initially at rest and m starts from top of the path.find velocity v of block as it leaves the block
Vatsala Hariharan asked a question
Subject: Physics, asked on on 10/2/18
The particle moves in a circular path of radius 'R' with an angular velocity ( w = Omega) w = a - bt where 'a' and 'b' are positive constants and 't' is time . The magnitude of the acceleration of the particle after time 2a/b is . A) a/R. B) a square R. C) R(a square + b ). D) R √ a raise to power 4 + b square.
Mitali Agarwal asked a question
Subject: Physics, asked on on 8/1/16
A diatomic molecule is made of two masses m1 and m2 which are separated by a distance r . if we calculate its rotational energy by applying bohr'srule of angular momentum quantization, its energy will be given by
(m1+m2)2n2h2/2m12m22r2 B)(m1+m2)n2 h2/2m1m2r2 C)2n2h2/(m1+m2)r2
Vatsala Hariharan asked a question
Subject: Physics, asked on on 10/2/18
A ball is placed on a smooth inclined plane of inclination theta = 30 degree to the horizontal , which is rotating at frequency 0.5 Hz about a vertical axis passing through its lower end . At what distance from the lower end does the ball remain at rest? A) 0.87 m. B) 0.33 m. C) 0.5 m. D) 0.67 m.
Kartik Shinde asked a question
Subject: Physics, asked on on 7/2/18
Solve this.
Q.7. The 6 kg carriage is supported as shown by two uniform disks, each having a mass of 4 kg and a radius of 75 mm. Knowing that the carriage is initially at rest, determine the velocity of the carriage 2.5 s after the 10 N force has been applied. Assume that the disks roll without sliding.
Jay Shah asked a question
Subject: Physics, asked on on 2/1/17
A block of mass m slides on a frictionless table. It is constrained to move inside a ring of radius R. At time t=0, block is moving along the inside of the ring (i.e., in the tangential direction) with velocity v0. The coefficient of friction between the block and the ring is µ. Find the speed of the block at time t.
Neha Tiwari asked a question
Subject: Physics, asked on on 6/2/18
A circular disc of mass 2 kg and radius 10cm rolls without slipping with a speed 2m/s. Total kinetic energy is
Aastha Mishra asked a question
Subject: Physics, asked on on 10/1/16
an automobile moves on road with aa speed of 54km.the radius of its wheels is 0.45m and moment of inertia about is axis of rotation 3kgm2 . if the vehicle is brought to rest in 15s, the magnitude of average torque transmittedto the wheel is
Reminjavad asked a question
Subject: Physics, asked on on 20/11/16
If angular momentum  is conserved in a system whose moment of inertia is decreased,will its rotational kinetic energy be also conserved?explain
Akshat Anand & 1 other asked a question
Subject: Physics, asked on on 20/10/17
A boy of mass 60 kg is standing over a platform of mass 40 kg placed over a smooth horizontal surface. He throws a stone of mass 1 kg with velocity 10 m/s at 45° angle with the ground.
(a) The momentum of (boy + platform + stone) system after the boy throws the stone changes in x-direction.
(b) The momentum of (boy + platform + stone) system after the boy throws the stone changes in y-direction.
(c) The displacement of (platform + boy) on the horizontal surface when the stone lands on ground is 10 cm.
(d) The displacement of (platform + boy) on the horizontal surface when the stone lands on ground is zero.
Davinder Singh asked a question
Subject: Physics, asked on on 15/3/17
Define angular momentum. Prove that angular momentum of a particle is equal to twice the product of its mass and areal velocity.
Pearl asked a question
Subject: Physics, asked on on 15/1/16
the moment of inertia of a disc about an axis perpendicular to the plane of the disc passing through its com is Io. it is folded along a diameter so that is one half becomes perpendicular to another half. calculate its moment of inertia about its diameter
Shashank Patwa asked a question
Subject: Physics, asked on on 21/12/17
A ball of mass M moving with a velocity V along x-axis strikes another ball of mass 2m kept at rest . the first ball comes to the rest after collision and other breaks into two equal pieces one of the pieces starts moving along y-axis with a speed V1 .what will be the velocity of the Other piece
A Pal asked a question
Subject: Physics, asked on on 23/1/17
Define Radius of Gyration.
Explain its physical significance.
Mehul Aswar asked a question
Subject: Physics, asked on on 2/12/16
In the figure shown, when the persons A and B exchange their positions, then


(a) the distance moved by the centre of mass of the system is ......................
(b) the plank move towards ................ by distance ...................
(c) the distance moved by A with respect to ground is ...................
(d) the distance moved by B with respect to ground is .................
 
Vatsala Hariharan asked a question
Subject: Physics, asked on on 10/2/18
A pendulum bob on a 2 m string is displaced 60 degree from the vertical and then released . What is the speed of a the bob as it passes through the lowest point in its path ?. A) √2 m/s. B) √9.8 m/s. C) 4.43 m/s. D) 1/√2 m/s.
Vatsala Hariharan asked a question
Subject: Physics, asked on on 10/2/18
A point starts from rest and moves along a circular path with a constant tangential acceleration . After one rotation , the ratio of its tangitial acceleration will be . A) 1 . B) 2π . C) 1/2π . D) 4π .
Srujan Mhase asked a question
Subject: Physics, asked on on 18/11/17
For a particle performing uniform circular motion v = w x r, obtain an expression for linear acceleration of the particle performing non uniform circular motion.
Vatsala Hariharan asked a question
Subject: Physics, asked on on 10/2/18
Two particles of equal masses are revolving in circular paths of radii r1 and r2 respectively with the same speed . The ratio of their centripetal forces is . A) r2/r1. B) √r2/√r1. C) (r1/r2) the whole square. D) (r2/r1) the whole square.
Lakshmi asked a question
Subject: Physics, asked on on 23/4/17
for a disc of radius R and mass M a circular hole of diameter R whose rim passes through the centre is cut what is the moment of inertia of the remaining part of the disc about a perpendicular axis passing through the centre
Mehul Aswar asked a question
Subject: Physics, asked on on 2/12/16
Three particles of mass 20 g, 30 g and 40 g are initially moving along +ve direction of three coordinate axes respectively with same speed 20 cm/s. Due to their mutual interaction, the first particle comes to rest, second acquires a velocity 10i^+20k^.
(a) The velocity of centre of mass initially is 1940i^+60j^+80k^
(b) The velocity of centre of mass is zero as they move under their mutual interaction.
(c) The velocity of third particle after first comes to rest is 2.5i^+15j^+5k^
(d) The velocity of third particle after first comes to rest is always zero
A Pal asked a question
Subject: Physics, asked on on 23/1/17
State and prove principles of parallel axes. Obtain expression for moment of inertia of
ring about an axis passing through tangent perpendicular to its plane.
Akhil Kamat asked a question
Subject: Physics, asked on on 17/4/17
A point P on the rim of wheel is initially at rest and in contact with the ground. Find the displacement of the point P if the radius of the wheel is 5 metre and wheel rolls forward through of revolution A. 5 metre B. 10 metre C. 2.5 metre D. 5 √(π^2 + 4) metre
Pearl asked a question
Subject: Physics, asked on on 16/1/16
find the moment of inertia of a rod of mass m and length l about an axis which passes from one end of the rod and makes angle theta with the length of the rod
Vatsala Hariharan asked a question
Subject: Physics, asked on on 10/2/18
The maximum tension that an inextensible ring of radius 1m and mass density 0.1 kg meter raise to -1 can bear is 40 N . The maximum angular velocity with which it can be rotated in a circular path is . A) 20 rad/s. B) 18 rad /s. C) 16 rad /s. D) 15 rad/s.
Hritik Mistry asked a question
Subject: Physics, asked on on 25/11/17
A ball strikes with angle 45 degree to the horizontal. The coefficient of restitution is1/2.then fractional loss in kinetic energy is?
Anjali Vashisth asked a question
Subject: Physics, asked on on 17/5/17
​please help!!
Sindhuvsls asked a question
Subject: Physics, asked on on 18/11/16
moment of inertia is independent of
a)mass of the body
b)distribution of mass of the body
c)temperature of the body
d)angular velocity of the body
give reason
K L Srinivas Raju asked a question
Subject: Physics, asked on on 21/10/16
If each mass in the figure is 1 kg, what is the x location of the center of mass?


  .5 .67 1.0 1.33 V
Pearl asked a question
Subject: Physics, asked on on 16/1/16
Two uniform solid spheres of the same size, but different mass, are released from rest simultaneously at the same height on a hill and roll to the bottom without slipping. which will reach first? how both?
Vatsala Hariharan asked a question
Subject: Physics, asked on on 9/2/18
A particle moves with constant speed 'v' along a circular path of radius 'r' and completes the circle in time 'T' . The acceleration of particle is. A) 2πv/T B) 2πr/T C) 2πr square/T D) 2πv square /T
Mitali Agarwal asked a question
Subject: Physics, asked on on 8/1/16
A diatomic molecule is made of two massesm1andm2which are separated by a distance r . if we calculate its rotational energy by applyingbohr'srule of angular momentumquantisation, its energy will be given by
(m1+m2)2n2h2/2m12m22r2 B)(m1+m2)n2h2/2m1m2r2 C)2n2h2/(m1+m2)r2
Vatsala Hariharan asked a question
Subject: Physics, asked on on 17/2/18
A particle of mass m is moving along a circular path of radius 'r' , with uniform speed 'v' . The relation between its kinetic energy (E) & momentum (P) is given by. A) E=P/2m. B) E=P^2/2m. C) E=P^2/m. D) E=2m/P^2
Mehul Aswar asked a question
Subject: Physics, asked on on 2/12/16
A square hole is punched out form a circular laming. The diagonal of the square being equal to radius of the circle, R. Find distance of CM of the remaining portion from centre of disc.



(a) R4π-2             (b) R3π-2               (c) 2R4π-2                 (d) 3R4π+2
Vatsala Hariharan asked a question
Subject: Physics, asked on on 9/2/18
The angular speed of a flywheel making 120 rev/min is A) 2 π rad/s B) 4 π square rad/s C) π rad/s D) 4 π rad/s
Hilon Zd Christa asked a question
Subject: Physics, asked on on 9/1/17
can you please tabulate the ​Values of M.I. for simple geometrical objects
Pearl asked a question
Subject: Physics, asked on on 1/3/16
what is the co ordinates of centre of mass of triangular lamina?
is it incentre, centroid or circumcentre or what?
A Pal asked a question
Subject: Physics, asked on on 23/1/17
Two idential metal beads (190g), moves along a horizontal glass rod (Mass 60g, Length = L), Rod can roatate on vertical axis through centre. At start beads are close to centre when rod starts rotating at 40 rads/sec. What is change in angular speed, when beads move to the end? Does rotational kinetic energy is conserved? No external torque force acts on system.
Vatsala Hariharan asked a question
Subject: Physics, asked on on 9/2/18
A particle moving on a circular path of 10 m radius . At any instant of time it's speed is 5 m/s and the speed is increasing at a rate of 2 meter per second square . At this instant magnitude of the net acceleration will be A) 3.2 m/s square . B) 2 m/s square C) 2.5 m/s square D) 4.3 m/s square
Vatsala Hariharan asked a question
Subject: Physics, asked on on 17/2/18
A particle is performing a U.C.M along a circle of radius 'r' . The relation between its centripetal acceleration (a) & kinitic energy (E) is given by. A) a= 2Em. B) a=E/mr. C) a=2E/mr. D) (2E/mr) ^2
Vatsala Hariharan asked a question
Subject: Physics, asked on on 10/2/18
A pendulum bob has a sped of 3 m/s at its lowest position . The pendulum is 0.5 long . The speed of bob , when string makes an angle of 60 degree to the vertical is , (g=10m/s) A) 2 m/s. B) 1/2 m/s. C) 1m/s. D) 2.5 m/s.
Laiba asked a question
Subject: Physics, asked on on 17/4/18
Solve this.:

Q. A tube of length L is filled completely with an incompressible liquid of mass M and closed at both the ends. The tube is then rotated in a horizontal plane about one of its ends with a uniform angular velocity ω. The force exerted by the liquid at the other end is:- 

1 MLω22    2 ML2ω2       3 ML ω2    4 ML2ω22
 
Suraj asked a question
Subject: Physics, asked on on 25/9/17
Explanation of the type of circular motion when it moves in a conical manner!! Tension,velocity??
Mitali Agarwal asked a question
Subject: Physics, asked on on 8/1/16
Adiatomic molecule is made of two massesm1andm2which are separated by a distance r . if we calculate its rotational energy by applyingbohr'srule of angular momentumquantisation, its energy will be given by
(m1+m2)2n2h2/2m12m22r2 B)(m1+m2)n2h2/2m1m2r2 C)2n2h2/(m1+m2)r2
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