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A block slides down a smooth inclined pl...

A block slides down a smooth inclined plane and then moves on to a rough horizontal surface. Which of the following is/are correct? (Neglect impulsive effect at the bottom of incline)

A

The graph of velocity as a function of time is

B

The graph of acceleration as a function of time is

C

The graph of mechanical energy as a function of time is

D

The graph of kinetic energy as a function of time is

Text Solution

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The correct Answer is:
A, B, C, D
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Knowledge Check

  • A block is about to slide down an inclined plane when its inclination to the horizontal is theta . If now a 5 kg weight is attached on the block :

    A
    It is still about to slide down the plane
    B
    It will not slide down the plane unless the inclination is increased
    C
    It will not slide down the plane unless .the inclination is decreased .
    D
    It will never slide down whatever be the inclination

  • A block is at rest on an inclined plane making an angle alpha with the horizontal . As the angle alpha of the incline is increased the block starts slipping when the angle of inclination becomes theta . The coefficient of static friction between the block and the surface of the inclined plane is or A body starts sliding down at an angle theta to the horizontal. Then the coefficient of friction is equal to

    A
    `sin theta`
    B
    `cos theta`
    C
    `tan theta`
    D
    Independent of `theta`

  • A block can slide on a smooth inclined plane of inclination theta kept on the floor of a lift. When the lift is descending with a retardation a , the acceleration of the block relative to the incline is

    A
    `(g+a)sintheta`
    B
    `(g-a)`
    C
    `gsintheta`
    D
    `(g-a)sintheta`

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