A man with a wrist watch and a pendulum clock | vedclass

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Question

(D) The correct answer is $D$.The functioning of a wrist watch depends on the spring action (mechanical tension),so it is not affected by gravity.Howe

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The pendulum clock will stop,but the wrist watch will function normally.

Vedclass · Answer

(D) The correct answer is $D$.The functioning of a wrist watch depends on the spring action (mechanical tension),so it is not affected by gravity.However,the time period of a pendulum clock is given by $T = 2\pi \sqrt{\frac{l}{g_{eff}}}$.During free fall,the effective acceleration due to gravity $(g_{eff})$ becomes zero.Substituting $g_{eff} = 0$ into the formula,we get $T = 2\pi \sqrt{\frac{l}{0}} = \infty$.Since the time period becomes infinite,the pendulum clock stops functioning during the fall.

$A$ man with a wrist watch and a pendulum clock rises to the top of a $TV$ tower. Both the wrist watch and the pendulum clock accidentally fall from the top of the tower. Then:

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