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Two fixed frictionless inclined planes m...

Two fixed frictionless inclined planes making an angle `30^@` and `60^@` with the vertical are shown in figure. Two blocks A and B are planes. What is the relative vertical acceleration of A with respect to B?

A

`4.9ms^(-2)` in vertical direction.

B

`4.9m^(2)` in horizontal direction

C

`9.8ms^(-2)` in vertical direction

D

Zero

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The correct Answer is:
A
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Knowledge Check

  • Two fixed frictionless inclined plane making angles 30^(@) and 60^(@) with the vertical are shown in the figure. Two blocks A and B are placed on the two planes What is the relative vertical acceleration of A with respect to B ?

    A
    `4.9 ms^(-2)` in horizontal direction
    B
    `9.8 ms^(-2)` in vertical direction
    C
    Zero
    D
    `4.9 ms^(-2)` in vertical direction

  • An inclined plane makes an angle of 60^(@) with horizontal. A disc rolling acceleration equal to:

    A
    `g/3`
    B
    `3/4g`
    C
    `g/(sqrt(3))`
    D
    `g/2`

  • An inclined plane makes an angle of 30^(@) with the horizontal. A solid sphere rolling down this inclined plane from rest without slipping has a linear acceleration equal to

    A
    `(g)/(3)`
    B
    `(2g)/(3)`
    C
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