Home
Class 12
PHYSICS
The coefficient of restitution between a...

The coefficient of restitution between a snooker ball and the side cushion is `1/3`. If the ball hits the cushion and then rebounds at right angles to its original direction, show that the angles made with the side cushion by the direction of motion before and after impact are `60^@` and `30^@` respectively.

A

`tan^(-1)((1)/(3))`

B

`tan^(-1)(sqrt3)`

C

`cot^(-1)(3)`

D

`cot^(-1)((1)/(3))`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

The coefficient of restitution for a body is e=(1)/(3) . At what angle the body must be incident on a perfectly hard plane so that the angle between the direction before and after the impact be at right angles:

A sphere of mass m , impinges obliquely on a sphere, of mass M, which is at rest. Show that, if m=eM , the directions of motion of the sphere after impact are at right angles.

Consider an oblique elastic collision between a moving ball and a stationary ball of the same mass. Both the balls move with the same speed after the collision. After the collision, the angle between the directions of motion of two balls is x degree. Find the value of x.

If any point of a parabolic path of a projectile the velocity be u and the dirrection of motion be at theta with the horizon , show that the particle is moving at right angle to its former direction after an interval of time t = (u)/(g sin theta)

A ball , moving with a speed of 10 sqrt(3) m//s , strikes an identical stationary ball such that after the collision , the direction of each ball makes an angle of 30^(@) with the original line of motion. The speeds of two balla after the collision are , respectively.

A ball is dropped from a height of 45 m from the ground. The coefficient of restitution between the ball and the ground is 2/3 . What is the distance travelled by the ball in 4th second of its motion. Assume negligible time is spent in rebounding. Let g= 10 ms^(2)

A ball of mass m is attached to a cord of length L , pivoted at point O , as shown in Fig. The ball is released from rest at point A, swings down and makes an inelastic collision with a block of mass 2m kept on a rough horizontal floor. The coefficient of restitution of collision is e = 2//3 and coefficient of friction between block and surface is After collision, the ball comes momentarily to rest at C when cord makes an angle of theta with the vertical and block moves a distance of 3L//2 on rough horizontal floor before stopping. The values of mu and theta are, respectively,

A smooth circular table is surrounded by a rim whose interior is vertical . A ball is projected along the table from a point on the rim in a direction making an angle theta to the radius through the point and returns to the point of projection after two impacts . If e be the coefficient of restitution, then

A ball is thrown with velocity 8 ms^(-1) making an angle 60° with the horizontal. Its velocity will be perpendicular to the direction of initial velocity of projection after a time of (g =10ms^(-2) )

Two spherical balls of masses m1 and m2 collide as shown in figure. After collision mass m1 moves with velocity u/3 in a direction perpendicular to original direction. The angle theta at which mass m2 will move after collision is