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A ball is dropped from a height h on a i...

A ball is dropped from a height h on a inclined plane, ball collides elastically with the first plane. Find the value of 'h' (in meter) so that it strikes perpendicular on the second inclined plane.

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A ball falls freely form a height onto and smooth inclined plane forming an angle a with the horizontal. Find the ratio of the distance between the points at which the jumping ball strikes the inclined plane. Assume the impacts to be elastic.

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Knowledge Check

  • A ball is dropped from a height h on a horizontal plane and the coefficient of restitution for the impact is e, the velocity with which the ball rebounds from the flor is

    A
    eh
    B
    egh
    C
    `esqrt((gh))`
    D
    `esqrt((2gh))`

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    A
    `t = sqrt((8h)/(g))` after it strikes the inclined at A
    B
    `t = sqrt((2h)/(g))`after it strikes the inclined at A.
    C
    a distance 4h sin `alpha` from A along the incline
    D
    a distance 8h sin `alpha` from A along the incline

  • A ball is projected horizontally from an inclined plane with a velocity V, as shown in the figure. It will strike the plane after a time

    A
    `(v_(0))/(sqrt3g)`
    B
    `(2v_(0))/(sqrt3g)`
    C
    `(v_(0))/(g)`
    D
    `(2sqrt3v_(0))/(g)`

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    A ball is projected form a point A on a smooth inclined plane which makes an angle a to the horizontal. The velocity of projection makes an angle theta with the plane upwards. If on the second bounce the ball is moving perpendicular to the plane, find e in terms of alpha and theta . Here e is the coefficient of restitution between the ball and the plane.

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