Pendulums

Classical Mechanics Level 1

A Bob made up of Iron of mass 10 kg is attached to a Holder through a thread. If the iron Bob is replaced with a bob constructed of wood which weighs 5 kg, Then the time period of the pendulum will decrease by how many seconds?


The answer is 0.

Mehul Arora by Mehul Arora , 20, India

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3 solutions

Vishal S
Dec 29, 2014

The time period of a pendulum does not depends on mass of the bob

It depends on length of the string & acceleration due to gravity.

therefore the decreased time period is 0

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Mehul Arora
Dec 29, 2014

The time period of a pendulum does not depend on the mass of it's bob. Hence, The answer is 0

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Rohit Ner
Jul 2, 2015

T = 2 π l g \Huge \color{#3D99F6}{T=2\pi\sqrt{\frac{l}{g}}} Where T \color{#3D99F6}{T} is the time period of the pendulum and l \color{#3D99F6}{l} is the length of the pendulum. Thus, the time period of the pendulum is independent of the mass of the Bob.

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