Physics
NULL
Medium
Question
A simple pendulum suspended from the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely, the time period is_________________?
A
Infinite
✓ Official correct answer
B
T/g
C
Zero
D
g/T
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A
Infinite
No member explanations yet for this option.
B
T/g
No member explanations yet for this option.
C
Zero
No member explanations yet for this option.
D
g/T
No member explanations yet for this option.
Explanation
In a freely falling lift, the effective gravity experienced inside is zero (weightlessness), removing the restoring force needed for oscillation; since T = 2*pi*sqrt(L/g_eff), as g_eff approaches zero, the period approaches infinity -- the pendulum effectively stops oscillating.
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