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Finding Average Velocity

A pendulum bo...

Question

A pendulum bob is suspended inside a lift moving upwards with constant velocity. If the mass of the bob is $50 g$ , then its weight inside the compartment is:-

A

zero

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B

0.1 N

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C

0.5 N

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D

0.05 N

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Solution

The correct option is C 0.5 N
Velocity $= c o n s t a n t$
Mass $= 50 g$
Weight inside the compartment
Weight $= m a s s \times a c c e l e r a t i o n d u e t o g r a v i t y = 50 g \times 10 m / s^{2} = 0.5 N$
In an elevator problems, this will be weight inside the compartment.

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