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A pendulum bob of mass 50 gm is suspende...

A pendulum bob of mass 50 gm is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately

A

`0.30`N

B

`0.40`N

C

`0.42` N

D

`0.50` N

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • A simple pendulum of length 1 m is freely suspended from the ceiling of an elevator. The time period of small oscillations as the elevator moves up with an acceleration of 2m//s^2 is (use g=10 m//s^2 )

    A
    `(pi)/sqrt5` s
    B
    `sqrt(2/5)pis`
    C
    `pi/sqrt2` s
    D
    `pi/sqrt3` s

  • Two blocks of masses m_(1) and m_(-2)mgt (m_(2)) are connected by massless threads that passes over a massless smooth pulley The pulley is suspended from the ceiling of an elevator Now the elevator moves up with uniform velocity V_(0) Now select the correct options .

    A
    Magnitude of acceleration of `m_(1)` with respect to ground is greate than `((m_(1)-m_(2))g)/(m_(1)+m_(2))`
    B
    Magnitude of acceleration of `m_(1)` with respect to ground is greate than `((m_(1)-m_(2))g)/(m_(1)+m_(2))`
    C
    Tension in the thread that connects `m_(1)` and `m_(2)` is equal to `(2m_(1)m_(2)g)/(m_(1)+m_(2)` .
    D
    Tension in the thread that connects `m_(1)` and `m_(2)` is equal to `(2m_(1)m_(2)g)/(m_(1)+m_(2)` .

  • Two blocks of masses m_(1) and m_(2)(m_(1) gt m_(2)) are connected by a massless threads, that passes over a massless smooth pulley. The pulley is suspended from the ceiling of an elevator. Now the elevator moves up with uniform velocity v_(0) Now, select the correct options:

    A
    Magnitude of acceleration of `m_(1)` with respect to ground is greater than `((m_(1)-m_(2))g)/(m_(1)+m_(2))`
    B
    Magnitude of acceleration of `m_(1)` with respect to ground is equal to `((m_(1)-m_(2))g)/(m_(1)+m_(2))`
    C
    Tension in the thread that connects `m_(1)` and `m_(2)` is equal to `(2m_(1)m_(2)g)/(m_(1)+m_(2))`
    D
    Tension in the thread that connects `m_(1)` and `m_(2)` is greater than `(2m_(1)m_(2)g)/(m_(1)+m_(2))`

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