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Jeneeta Eliza John
Subject: Physics
, asked on 22/3/18
How to find the centre of mass for the following shapes?
Answer
1
Aditya
Subject: Physics
, asked on 21/3/18
Q n. 1 please solve
Answer
1
Yashi Mishra
Subject: Physics
, asked on 21/3/18
Moment of inertia of a uniform circular disc about it's diameter is love. It's moment of inertia about an axis parallel to to it's plane and passing through a point on it's rim will be
Answer
1
Yashi Mishra
Subject: Physics
, asked on 21/3/18
A thin wire of length l and mass m is bent in the form of a semicircle. The moment of inertia about an axis perpendicular to it's plane and passing through the end of wire is
Answer
1
Yashi Mishra
Subject: Physics
, asked on 21/3/18
The moment of inertia of a uniform semi circular wire of mass m and radius r, about an axis passing through it's center of mass and perpendicular to it's plane is
Answer
1
Yashi Mishra
Subject: Physics
, asked on 21/3/18
The moment of inertia of a uniform semi circular wire of mass m and radius r, about an axis passing through it's centre of mass and perpendicular to it's plane is
Answer
1
Yashi Mishra
Subject: Physics
, asked on 21/3/18
Solve this:
Answer
1
Hermoine
Subject: Physics
, asked on 19/3/18
How come they will have same acceleration it should depend on the value of C that is I/MR^2??
Q.1. A solid sphere, a hollow sphere and a ring are released from top of an inclined plane (frictionless) so that they slide down the plane, Then the maximum acceleration down the plane is for (no rolling)
(A) solid sphere
(B) hollow sphere
(C) ring
(D) all same
Answer
1
Shedha Bilal
Subject: Physics
, asked on 19/3/18
The moment of inertia of a thin rod of mass m and length l about an axis perpendicular to the rod at its midpoint is Ml
2
/2.
a)What is the radius of gyration in the above case?
b) A student has to find the moment of inertia of the above rod about an axis (AB) perpendicular to the rod and passing through one end of the rod. Name and state the law used in this case.
c) Using the theorem, find the moment of inertia of the rod about AB.
Answer
1
Raj Aryan
Subject: Physics
, asked on 18/3/18
Solve this:
6. Two small balls A and B, each of mass m, are connected by a light rod of the length L. The system is lying on a frictionless horizontal surface. The particle of mass m collides with the rod horizontally with the velocity v
0
perpendicular to the and gets stuck to it as shown in the figure. Find
(a) the angular velocity of the system after the collision.
(b) the velocity of A and B immediately after the collision.
(c) the velocity of the centre of the rod when the rod rotates through 90
o
after the collision.
Answer
1
Hermoine
Subject: Physics
, asked on 18/3/18
Please explain with steps
Q14. A body weighs 6 g when placed in one pan and 24 g when placed on the other pan of a false balance. If the beam is horizontal when both the pans are empty, find the true weight of the body.
Answer
1
Raj Aryan
Subject: Physics
, asked on 18/3/18
Solve this:
Q.4. A uniform cube of side l and mass m rests on a rough horizontal table. A horizontal force F is applied normal to one of the faces at a point that is directly above the center of the face at a height 3l/4 above the base. Assuming that the cube may tip about an edge without slipping, find the angular acceleration of the cube when F is equal to (a) mg/3. and (b) mg.
Answer
1
Aviral
Subject: Physics
, asked on 17/3/18
Solve this:
Q.51. Two identical uniform bricks of length L are placed in a stack over the edge of a horizontal surface with the maximum overhang possible without falling, as in figure. Find the distance x.
Answer
1
Hermoine
Subject: Physics
, asked on 16/3/18
The uniform rod AB of mass
m
is released from rest when β = 60°. Assuming that the frictional force between end A and the surface is large enough to prevent sliding, determine (for the instant just after release
(A) the angular acceleration of the rod.
(B) the normal reaction and the friction force at A.
(C) the minimum value of µ, compatible with the described motion.
Answer
1
Hermoine
Subject: Physics
, asked on 16/3/18
I have a doubt in q7 part 2
Q17. A particle moves with deceleration along the circle of radius R so that at any moment of time its tangential and normal accelerations are equal in moduli. At the initial moment t = 0, the speed of the particle equals
v
0
+
then
(ii) the total acceleration of the particle as function of velocity and distance covered is given as
(A) a =
2
v
2
R
(B) a =
2
v
R
(C) a =
2
R
v
(D) a =
2
R
v
Answer
1
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What are you looking for?
Q.1. A solid sphere, a hollow sphere and a ring are released from top of an inclined plane (frictionless) so that they slide down the plane, Then the maximum acceleration down the plane is for (no rolling)
(A) solid sphere
(B) hollow sphere
(C) ring
(D) all same
a)What is the radius of gyration in the above case?
b) A student has to find the moment of inertia of the above rod about an axis (AB) perpendicular to the rod and passing through one end of the rod. Name and state the law used in this case.
c) Using the theorem, find the moment of inertia of the rod about AB.
6. Two small balls A and B, each of mass m, are connected by a light rod of the length L. The system is lying on a frictionless horizontal surface. The particle of mass m collides with the rod horizontally with the velocity v0 perpendicular to the and gets stuck to it as shown in the figure. Find
(a) the angular velocity of the system after the collision.
(b) the velocity of A and B immediately after the collision.
(c) the velocity of the centre of the rod when the rod rotates through 90o after the collision.
Q14. A body weighs 6 g when placed in one pan and 24 g when placed on the other pan of a false balance. If the beam is horizontal when both the pans are empty, find the true weight of the body.
Q.4. A uniform cube of side l and mass m rests on a rough horizontal table. A horizontal force F is applied normal to one of the faces at a point that is directly above the center of the face at a height 3l/4 above the base. Assuming that the cube may tip about an edge without slipping, find the angular acceleration of the cube when F is equal to (a) mg/3. and (b) mg.
Q.51. Two identical uniform bricks of length L are placed in a stack over the edge of a horizontal surface with the maximum overhang possible without falling, as in figure. Find the distance x.
(A) the angular acceleration of the rod.
(B) the normal reaction and the friction force at A.
(C) the minimum value of µ, compatible with the described motion.
Q17. A particle moves with deceleration along the circle of radius R so that at any moment of time its tangential and normal accelerations are equal in moduli. At the initial moment t = 0, the speed of the particle equals then
(ii) the total acceleration of the particle as function of velocity and distance covered is given as
(A) a = (B) a =
(C) a = (D) a =