First slide

Periodic Motion

Question

A seconds pendulum is suspended from the roof of a lift. If the lift is moving up with an acceleration 9.8 m/s², its time period is1 s

Easy

A

1 s
B

√2 s
C

1/√2 s
D

2√2 s

Solution

$T = 2 π \sqrt{\frac{ℓ}{g + a}}$

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