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Question: A pendulum bob of mass 50 gm is suspended from the ceiling of an elevator. The tension in the string...

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

Answer

0.50 N

Explanation

Solution

T=mg=50×10−3×10=0.5 NT = m g = 50 \times 10 ^ { - 3 } \times 10 = 0.5 \mathrm {~N}