Home
Class 12
PHYSICS
The ball of mas m moves with speed v aga...

The ball of mas `m` moves with speed `v` againest a smooth , fixed vertical circular groove of radius `R` kept on smooth horizontal surface find the
a. normal reaction of the floor or the ball.
b. normal reaction of the vertical wall on the ball.

Text Solution

Verified by Experts

The correct Answer is:
(i) mg, (ii) `(mv^(2))/(r)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A ball of mass m is rotating in a circle of radius r with speed v inside a smooth cone as shown in figure. Let N be the normal reaction on the ball by the cone, then choose the correct option:

A ball of mass m inside a smooth spherical shell of radius R with velocity sqrt(2qR) at A What is the direction of force acting on the ball, when it reaches B ?

Two balls marked 1 and 2 of the same mass m and a third ball marked 3 of mass M are arranged over a smooth horizontal surface as shown in the figure. Ball 1 moves with a velocity v_(1) towards ball 2. All collisions are assumed to be elastic. If Mltm , the number of collisions between the balls will be.

A ball of mass m=1kg falling vertically with a velocity v_0=2m//s strikes a wedge of mass M=2kg kept on a smooth, horizontal surface as shown in figure. If impulse between ball and wedge during collision is J. Then make two equations which relate J with velocity components of wedge and ball. Also find impulse on wedges from ground during impact.

A ball of mass m , moving with a speed 2v_(0) collides inelastically ( e gt 0) with an identical ball at rest . Show that (a) For head - on collision , both the balls move forward . (b) For a general collision , the angle between the two velocities of scattered balls is less than 90^(@)

Two beads of masses m_(1) and m_(2) are closed threaded on a smooth circular loop of wire of radius R. Intially both the beads are in position A and B in vertical plane . Now , the bead A is pushed slightly so that it slide on the wire and collides with B . if B rises to the height of the centre , the centre of the loop O on the wire and becomes stationary after the collision , prove m_(1) : m_(2) = 1 : sqrt(2)

A ball of mass m is released from A inside a smooth wedge of mass m as shown in figure. What is the speed of the wedge when the ball reaches point B?

A steel ball strikes a fixed smooth steel plate placed on a horizontal surface at an angle theta with the vertical. If the coefficient of restitution is e, the angle at which the rebound will take place is:

A ball of mass 1kg is suspended by an inextensible string 1m long attached to a point O of a smooth horizontal bar resting on fixed smooth supports A and B. The ball is released from rest from the position when the string makes an angle 30^@ with the vertical. The mass of the bar is 4kg . The displacement of bar when ball reaches the other extreme position (in m) is

Two smooth sphere each of radius 5cm and weight W rest one on the other inside a fixed smooth cylinder of radius 8cm. The reaction between the sphere and the vertical side of the cylinder are: