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If the length of a simple pendulum is doubled keeping its amplitude constant its energy will be (a) Unchanged (b) Doubled (c) Four times (d) Halved

If the length of a simple pendulum is doubled keeping its amplitude constant its energy will be
(a) Unchanged (b) Doubled
(c) Four times (d) Halved

Grade:Upto college level

1 Answers

Akshaya Sainath
20 Points
3 years ago
the answer is (d) halved. we know the formula t = 2pi * root(l/g).
so when l’ = 2l. t becomes root(2) times more. 
 

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