Home
Class 11
PHYSICS
A rigid ball of mass m strikes a rigid w...

A rigid ball of mass m strikes a rigid wall at `60^(@)` and gets reflected without loss of speed as shown in the figure. The value of impulse imparted by the wll on the ball will be

A

mv

B

2mv

C

mv/2

D

mv/3

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Impulse is imparted due to change in perpendicular components of momentum of ball.
`J=Deltap=mv_(s)-mv_(i)`
`mv cos 60^(@)-(-mv cos60^(@))`
`=2mv cos 60^(@)=2 mvxx(1)/(2)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • LAWS OF MOTION

    DC PANDEY|Exercise Match the columns|7 Videos

  • KINEMATICS 1

    DC PANDEY|Exercise INTEGER_TYPE|15 Videos

  • LAWS OF THERMODYNAMICS

    DC PANDEY|Exercise Level 2 Subjective|18 Videos

Similar Questions

Explore conceptually related problems

A rigid ball of mass ma strickes a rigid wall at 60 ^(@) reflected without loss of speed as shown The value of impulse imparted by the wall on be :

A ball of mass m strikes a rigid wall with speed v and gets reflected without any loss of speed, as shown in the figure. (a) What is the magnitude of the impulse imparted to the ball by the wall? (b) What is the direction of the force on the wall due to the ball?

Knowledge Check

  • A riding ball of mass m strikes a rigid wall at 60^(@) and gets reflected without loss of speed as shown in the figure below. The value of impulse imparted by the wall on the ball will be.

    A
    `(mV)/(2)`
    B
    `(mV)/(3)`
    C
    `mV`
    D
    `2mV`

  • A ball of mass 'm' strikes a rigid wall with speed 'u' and rebounds with the same speed. The impulse imparted to the ball by the wall is

    A
    2 mu,
    B
    mu,
    C
    zero
    D
    `-2mn`

  • A ball of mass m strikes a rigid walJ with speed u and rebounds with the same speed. The impulse imparted to the ball by the wall is

    A
    `("mu sin"30^(@))/(t)`
    B
    `("2mu sin"30^(@))/(t)`
    C
    `("mu cos"30^(@))/(t)`
    D
    `("2mu cos"30^(@))/(t)`

    • Similar Questions

    Explore conceptually related problems

    A particle of mass m strikes a wall with speed v at an angle 30^(@) with the wall elastically as shown in the figure. The magnitude of impulse imparted to the ball by the wall is

    Two identical billiard balls striks a rigid wall with the same speed but at different angles , and get reflected without any change in speed , as shown in Fig . What is (i) the direction of the force on the wall due to each ball ? (ii) the ratio of the magnitudes of impulses imparted to the balls by the wall ?

    A ball of mass m strikes a rigid walJ with speed u and rebounds with the same speed. The impulse imparted to the ball by the wall is

    A ball of mass 0.1 kg strikes a wall normally with a speed of 30 m s ^( - 1 ) and rebounds with a speed of 20 ms ^( - 1 ) . The impulse of the force exerted by the wall on the ball is

    A ball of mass m moving with speed u collides with a smooth horizontal surface at angle theta with it as shown in figure. The magnitude of impulse imparted to surface by ball is [Coefficient of restitution of collision is e]

    Home
    Profile