Home
Class 11
PHYSICS
A boby is moving in a room with a vel...

A boby is moving in a room with a velocity of `20m//s` perpendicular to the two walls separated by 5 meters .There is no friction and the collisionnn with the walls are elastic.

A

Not periodic

B

Periodic but not smple harmonic

C

Periodic and simple harmonic

D

Periodic with variable time period

Text Solution

Verified by Experts

The correct Answer is:
B
Doubtnut Promotions Banner Mobile Dark
|

Similar Questions

Explore conceptually related problems

0A body of mass 20 kg moving with a velocity of 3 m//s, rebounds on a wall with same velocity. The impulse on the body is -

Two particles A and B separated by 10 m at time t = 0 are moving uniformly. A is moving along line AB at a constant velocity of 4 m//s and B is moving perpendicular to the velocity of A at a constant velocity of 5 m//s . After what time the two particles will be nearest to each other?

Knowledge Check

  • A vessel contains 6xx 10^(26) molecules m ^(-3). Mass of each molecule is 6xx10^(-27) kg. Assume that, on an average, one-sixth of the molecules move with a velocity 10^(3) m/s perpendicularly towards each wall. If the collisions with the walls are perfectly elastic, then which of the following is correct?

    A
    Change in momentum of each molecule is `12xx10^(-24)` kg m/s in each collision
    B
    The number of molecules hitting normally to1 `m ^(2)` of the wall per second is `10^(29)`
    C
    Total change in momentum of all molecules per second is`10^(31)` SI units
    D
    The number of molecules hitting one square metre of the surface is `6xx 10^(29)`

  • A wall moving with velocity 2 cms^(-1) towards the ball and ball is moving towards the wall with a velocity 10 cms^(-1) . It hits the wall normally and makes elastic collision with wall. The velocity of ball after collision with wall in cms^(-1) .

    A
    12
    B
    8
    C
    14
    D
    16

  • A bead of mass m and diameter d is sliding back and forth with velocity v on a wire held between two right walls of length L. Assume that th ecollisions with the wall are perfectly elastic and ther is no friction. The average force that the bouncing bead exerts on the one of the walls is :_

    A
    `(mv^(2))/(L - d)`
    B
    `(mv^(2))/(L + d)`
    C
    `(2mv^(2))/(L - d)`
    D
    `(2 mv^(2))/(L + d)`

    • Similar Questions

    Explore conceptually related problems

    A sphere of mass m slides with velocity v on as frictionless surface towards a smooth inclined wall as shown in figure. If the collision with the wall is perfectly elastic find a. the impulse imparted by the wall on the sphere b the impulse imparted by the floor on the sphere.

    A source of sound of frequency 256 Hz is moving towards a wall with a velocity of 5 m/s. How many beats per second will be heard by an observer O standing in such a positoin that the source S is between O and wall? (c=330(m)/(s) )

    A bullet hits a wall with a velocity of 20 m/s and penetrates it up to a distance of 5 cm. Find the deceleration of the bullet in the wall.

    A parallel beam of particles of mass m moving with velocity v impinges on a wall at an angle theta to its normal. The number of particles per unit volume in the beam is n . If the collision of particles with the wall is elastic, then the pressure exerted by this beam on the wall is

    An engine driver moving towards a wall with a velocity of 60 m/s emits a note of 1400 Hz. Speed of sound in air is 340 m/s .The frequency of the note after reflection from the wall as heard by the engine driver is

    Home
    Profile