Grade 12th passMechanics

A girl swinging on a swing in sitting position suddenly stands on it. Then period of oscillation of the swing
A. Increases B. Decreases C. Remain unchanged D. Becomes infinite

Question image for A girl swinging on a swing in sitting position su

Manish Sah

6 Years agoGrade 12th pass

3 Answers

Saurabh Koranglekar

Approved Tutor Answer6 Years ago

Vikas TU

6 Years ago

When athe girl stands up the centre of mass gets higher which is also the point of oscillation. As a result the effective length will decrease. Now since the time period varies with the square root of the effective length, time period will decrease.

Arun

6 Years ago

As we learnt in

Time period of oscillation of simple pendulum -

$T=2\pi \sqrt{\frac{l}{g}}$

- wherein

l = length of pendulum

g = acceleration due to gravity.

The centre of gravity shifted upwards so the length from point of suspension will decrease.

Correct option is 2.

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A girl swinging on a swing in sitting position suddenly stands on it. Then period of oscillation of the swingA. Increases B. Decreases C. Remain unchanged D. Becomes infinite

Manish Sah

3 Answers

Saurabh Koranglekar

Vikas TU

Arun

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A girl swinging on a swing in sitting position suddenly stands on it. Then period of oscillation of the swing
A. Increases B. Decreases C. Remain unchanged D. Becomes infinite

A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.

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