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How to read log & anti log table??????

The 200 N force is to be resolved into components along the lines a-a' and b-b'.

(a) Determine the angle P by trigonometry knowing that the component along a-a' is 150 N.

(b) What is the corresponding value of the component along b-b'?

answer: (a) 103.0 degrees (b) 276 N

Please help me with the solution.

what is triangle law of vector addition

if we hang a magnet in front of an iron car will it move ? give reason with suitable answer.

what is polar vector and axial vector?

in a circle. He finds that it travels 6 revolutions

in an anticlockwise direction for a time of

31.4sec.

a) Find the angular velocity of the

insect.

b) If the insect travels

4 revolutions in the clockwise

direction for a time of 8.6sec, what

will be the angular speed averaged

over the total time?

c) Obtain the expression for centripetal

acceleration (ac) in terms of angular

speed ( ).

the speed of a projectile when it is at its greatest height is root(2/5) times its speed at half the max height . what is the angle of projection ?

Any Vector

Ais given byA= xi + yj. The another vectorBperpendicular toAcan be written asDefine centripetal acceleration. Derive an expression for the centripetal acceleration of a particle moving with uniform speed v along a circular path of radius r.discuss the direction of this accelerationif two vectiors of magnitudeof 5 and 3 are added such that angle between resultant and vector of magnitude 3 is maximum and it will be.

Derive relation between linear velocity and angular velocity

1.0m

2.12m

3.16m

4.20m

How collinear vectors can be parallel?how to use a log book to find natural sines and natural cos ?

The relation between time(t) and distance(x) is t=Ax^2 + Bx, A and B are constants. Prove that its retardation is 2Av^3.

1.) The distances of point of projection from the building is?

2.)The time for which the ball is above the roof?

3.) The length of one edge of the roof of building?

A person moves 30m north then 20m east and finally 30 root 2 m south west .find the displacement from original position

The velocity of a particle moving in straight line depends on its position as v= 3sin [(pi /2) + x ] m/s. Find the acceleration of the particle when at x = pi / 4. (Ans : -9/2 m/s)

The resultant of two vectors A and B is perpendicular to vector A and its magnitude is equal to half the magnitude of vector B ,Find the angle between A and B?

discuss the condition for the maximum range of the projectile.Show that for a given velocity of projection, there are two angles of projection which give the same range of projectile ?

A particle is moving along a circular path of radius 5m with a uniform speed of 5m/s. What will be the average acceleration when the particle completes the half revolution? (Ans : 10/pi m/s)

A particle is projected vertically upwards from point A on the ground. It takes t1 time to reach a point B but it still continues to move up. If it takes further t2 time to reach the ground from point B then height of point B from the ground is :A) 1/2*g*(t_{1}+t_{2})^{2}B) gt_{1}t_{2}C) 1/2*g*(t

_{1}+ t_{2})^{2}D) 1/2*g*t_{1}t_{2}Xplain the solution.........define positive,negative and zero work with examples

Forces 3P,7P and 5P act at a point paralell to the sides AB,BC and AC of the equilateral triangleABC.Find the magnitude and direction of the resultant.

satae and explain polygon law of vectors

_{1 }acts due east and F_{2 }acts 60^{o }north of east. both have equal magnitude of 20N each.What is the magnitude and direction of F

_{1}+F_{2 ?}Can you prove that path of a projectile is a parabola....???

Which of the following pairs of displacements cannot be added to give a resultant displacement of 2m?

1. 1m+1m

2. 1m+2m

3. 1m+3m

4. 1m+4m

2. Two vectors, both equal in magnitude, have their resultant equal in magnitude of the either. Find the angle between the two vectors.

OR

Two equal forces have their resultant equal to either, what is the inclination between them?

A cricketer can throw a ball to a maximum horizontal distance of 100m. How much high above the ground can the crickter throw the same ball?

a projectile is thrown horizontally from top of a tower strikes the ground after 3sec at an angle 45

^{0}with horizontal.find height of tower and speed which body was projected.{g=9.8m/s^{2}}Two forces acting on a particle in opposite directions have the resultant of 10N. If they act at right angles to each other, the resultant it 50N. Fing the 2 forces.

a motor boat is racing towards north at 25km/h & the water current in tht region is 10 km/h in d direction of 60 degree east of south . find d resultant velocity of boat ............

my question is how do we know frm where we have to take angle ......... plzzz xplain me ... i hv xam tomorrow.......

the ceiling of a long hall is 25 m high . what is the maximum horizontal distance that a ball thrown with a speed of 40 m/s can go without hitting the ceiling of the hall ?

A man can swim in still water at a speed of 3km/h . He wants to cross a river that flows at a speed of 2 km/h and reach a point directly opposite to the starting point.

1. In what direction should he try to swim ?

2. How much time will he take to cross the river if the river is 500 m wide ?

a) Find v(t) & a(t) of the particle.

b) Find v(t) & t = 1.0sec

Rain is falling vertically with a speed of 35m/s . winds starts blowing after sometime with a speed of 12m/s in east to west direction . In which direction . In which direction should a boy waiting at a bus stop hold his umbrella ? this question was answered wrong by an expert i need d correct answer and explanaton for this :(

Two forces F

_{1}and F_{2}are acting on a particle and the angle between them is theta.The angle between the resultant force and F_{1}is alpha. Find tanalpha in terms of F_{1},F_{2}and theta.One second after projection a stone moves at an angle of 45 degree with the horizontal. Two seconds after projection it moves horizontally .Then what is the angle of projection of the projectile?

A particle is subjected to two equal forces along two different directions. If one of them is halved, the angle which the resultant makes with the other is also halved, The angle between the forces is halved. The angle between the forces is ?

show that path of a projectile is a parabola.

a projectile is fired horizontal with a speed 98m/s from the top of hill 490m height. find

Obtain the component of vector

A=2i+3jin the direction of vectori+j.9. A particle is projected with a velocity of 10 m/s at an angle of 75

^{o}with the horizontal. The value of 'X' for the ball to return to its initial point of projection is.$\left(A\right)2.5\sqrt{3}\phantom{\rule{0ex}{0ex}}\left(B\right)5m\phantom{\rule{0ex}{0ex}}\left(C\right)2.5m\phantom{\rule{0ex}{0ex}}\left(D\right)3m$

Q). State the triangle law of vector addition and derive the expression to find the magnitude of resultant of two vectors of magnitude $\left|\overrightarrow{P}\right|and\left|\overrightarrow{Q}\right|$, inclined at an angle $\theta $.

find the magnitude and direction of the resultant of two vectors A and B in terms of their magnitudes and angle

Obetween them..forces i^ + j^ - 2k^, (2i^-j^+k^), (3i^-j^+4k^),(4i^-2j^+3k^) act on a body simultaneously.the resultant force has a magnitude of...

A hiker stands on the edge of a cliff 490 m above the ground and throws a stone horizontally with an initial velocity of 15 m/s.Neglecting air resistence,find the time taken by the stone to reach the ground and the speed with which it hits the ground.(g=9.8 m/s).Please provide the answer for this question.

can there be motion in two dimensions with an acceleration only in 1 D? show this with eg.

Prove that the maximum horizontal range is 4 times the max height attained by the projectile fired at an inclination so as to have maximum horizontal range

Q. A child pulls a rope attached to a stone with a force of 60N. the rope makes an angle of 40 degree to the ground.

a) calculate the effective value of the pull tending to move the stone along the ground.

b) Calculate the force tending to lift the stone vertically.

( plss help me in this question with a diagram)

the equation of projectile is y = ax - bx2 . its horizontal range is?

a body moves 6 m north , 8 m east and 10 m vertically upwards , the resultant displacement o the body from its intitial position is ??please answer fast..!!

A projectile is thrown into space so as tohave a max. possible horizontal range of 400mts. Taking the point of projection as the origin, the co-ordinates of the point where the velocity of the projectile is minimum are? can you show how to solve it?

If the frame of refrence is rotated or displaced, then what happens to the vector and its components?

An object is projected with velocity v

_{0}=15i^ +20j^. Considering x along horizontal axis and y along vertical axis. Find its velocity after 2 seonds.two forces 5 kgf and 10 kgf are acting at an angle of 120

^{0}calculate the magnitude and direction of the resultant force.If A=3i+4j and B=7i+24j then find the vector having the same magnitude as B and same direction as A.

If vector A and B are two non collinear unit vectors and if |A+B|=, then find the value of (A-B).(2A+B)

Please help! :O

a body thrown vertically up with initial velocity 52 m/sec from the ground passes twice a point at H height above at an interval of 10 s . The height H is (Take g= 10)

Two particles A and B start moving with velocities 20m/s and 30√2m/s along x-axis and at an angle of 45 degree with x-axis respectively in xy - plane from origin. what is the relative velocity of B w.r.t A ?

{urgently} expert answer only

two paper screens A and B Are seperated by a distance of 100m. A gullet penetrates A and B at points P AND Q respectively. Where Q is 10 cm below P. If bullet is travelling horizontally at the time of hitting A the velocity of bullet ar A is nearly how much?Help experts

a PARTICLE IS PROJECTED FROM GROUND WITH SPEED 80 m/s AT AN ANGLE 30 DEGREE WITH HORIZONTAL FROM GROUND .THE MAG NITUDE OF AVERAGE VELOCITY OF PARTICLE IN TIME T=2SEC TO T=6SECS IS?

A particle starts from origin t=0 with a velocity 5.0 ^i m/s and moves in x-y plane under action of a force which produces a constant acceleration of (3.0 ^i + 2.0^j) m/s squ.

a) What is the y coordinate of the particle at the instant its x coordinate is 84m?

b)What is the speed of the particle at this time?

Please help! :o

3.find the value(s) of x for which the angle between the vectors a=xi-3j-k and b=2xi+xj-k is obtuse

A motor boat of mass m moves along a lake with velocity V

_{0}.At t = 0, the engine of the boat is shut down. Magnitude of resistance force offered by the boat is equal to rV. Find its acceleration in m/s^{2}when passing through the point x = 2m ( Ans : mV_{0}/2r )Are the magnitude and direction (A-B) same as that of (B-A)?

A PROJECTILE IS PROJECTED WITH A VELOCITY u SO THAT ITS HORIZONTAL RANGE IS TWICE THE GREATEST HEIGHT ATTAINED.FIND THE HORIZONTAL RANGE OF IT

the angle of projection of a body is 15 degree .the other angle for whioch the range is same as the firdt one is equal to?

a river is flowing from west to east at speed 5m/min. a man on the south bank of river, capable of swimming at 10m/ min in still water wants to swim across the river to a point directly opposite in shortest time. what direction shoukd he swim in?

can u plz explain the meaning of this problem with the help of a diagram. n wt is rele to be found out.?i need this soon plz.

A person can swim in still water at the rate of 1km/hr. He tries to cross river by swimming perpendicular to the river flowing at the rate of 2km/hr. if the width of the river is 10m find the location of the point where he lands on the other side of the river , also find time taken by him to cross the river. (Answer Fast)

in a car race, car A takes a tym t sec less than the car B and passes the finishing part with a velocity v more than that of the car B .if the cars start from rest and travel with constant accleration A1 and A2 respectively. show that V = T * root over of A1* A2.

B-1. Calculate the moment of inertia of a uniform square plate of mass M and side L about one of its diagonals, with the help of its moment of inertia about its centre of mass.

B-2. A uniform triangular mass M whose vertices are ABC has lengths $\mathcal{l},\frac{\mathcal{l}}{\sqrt{2}},\frac{\mathcal{l}}{\sqrt{2}}$ as shown in figure. Find the moment of inertia of the plate about an axis passing through point B and perpendicular to the plane of the plate.

B-3 Find the moment of inertia of a uniform half-disc about an axis perpendicular to the plane and passing through its centre of mass. Mass of this disc is M and radius is R.

B-4 Calculate the radius of gyration of a uniform circular disk of radius r and thickness t about a line perpendicular to the plane of this disk and tangent to th disk.

write the dimensions of a/b in the relation F=a root x +bt

^{2}where F is force , x is distance and t is time.and r=u root 2h/g