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The springs shown in the figure are all ...

The springs shown in the figure are all upstretched in the beginning when a man starts pulling the block. The man exerts a constant force F on the block.

A

the amplitude of oscillation is `((K_(2)+K_(3))F)/(K_(1)K_(2)+K_(2)K_(3)+K_(3)K_(1))`

B

the oscillation frequency is `(1)/(2pi)[(K_(1)K_(2)+K_(2)K_(3)+K_(3)K_(1))/(M(K_(2)+K_(3)))]^(1//2)`

C

the amplitude of oscillation is `(2(K_(2)+K_(3))F)/(K_(1)K_(2)+K_(2)K_(3)+K_(3)K_(1))`

D

the oscillation frequency is `(1)/(pi)[(K_(1)K_(2)+K_(2)K_(3)+K_(3)K_(1))/(M(K_(2)+K_(3)))]^(1//2)`

Text Solution

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The correct Answer is:
A, B
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Knowledge Check

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

  • A man wants to slide down a block of mass m which is kept on a fixed inclined plane of inclination 30^(@) as shown in the figure .Initially the block is not sliding . To just start sliding the man pushed the block down the inclined with a force F . Now , the block starts accelerating. To move it downwards with conatant speed the man starts pulling the block with same force. Surface are such that ratio of maximum static friction to kinetic friction is 2 Now, answer the following questions. What minimum force is required to move it up the incline with constant speed?

    A
    `(2)/(3) mg`
    B
    `(mg)/(2)`
    C
    `(7 mg)/(6)`
    D
    `(5 mg)/(6)`

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    A
    `(mg)/(4)`
    B
    `(mg)/(6)`
    C
    `(mg sqrt3)/(4)`
    D
    `(mg)/(2 sqrt3)`