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The work done in moving a body of mass 5...

The work done in moving a body of mass 5kg from the bottom of a smooth inclined plane to the top is 50 j. If the angle of inclination of the inclined plane is `30^(@)`, its length is `(g = 10 ms^(-2))`

A

1/2m

B

1m

C

2m

D

4m

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • The work done in moving a body of mass 5kg from the bottom of a smooth inclined plan to the top is 50J. If the angle of inclination of the inclined plane is 30^(@) , its length is (g= 10 ms^(-2))

    A
    1/2m
    B
    1m
    C
    2m
    D
    4m

  • A car of mass 2 metric tons is moving up a smooth inclined plane with a velocity of 72KMPH. If the power of the engine is 8KW, the angle of inclination of the inclined plane is

    A
    `Tan^(-1) ((1)/(49))`
    B
    `cos^(-1) ((48)/(49))`
    C
    `cos^(-1) ((1)/(49))`
    D
    `sin^(-1) ((1)/(49))`

  • A car of mass 2 metric tons is moving up a smooth inclined plane with a velocity of 72KMPH. If the power of the engine is 8 KW, the angle of inclination of the inclined plane is

    A
    `Tan^(-1)((1)/(49))`
    B
    `cos^(-1)((48)/(49))`
    C
    `cos^(-1)((1)/(49))`
    D
    `sin^(-1)((1)/(49))`

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