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Q.

Why should the amplitude be small for a simple pendulum experiment?

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a

Because T=2πL/g is based on the assumption that cosθ≡θ which is true only for small amplitude.

b

Because T=2πL/g is based on the assumption that secθ≡θ which is true only for small amplitude.

c

Because T=2πL/g is based on the assumption that sin θ≡θ which is true only for small amplitude.

d

Because T=2πL/g is based on the assumption that tan θ≡θ which is true only for small amplitude.

answer is C.

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Detailed Solution

Because T=2πL/g is based on the assumption that sin θ≡θ  which is true only for small amplitude.
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