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The length of a pendulum is halved. Its energy will (a) Decreased to half (b) Increased to 2 times (c) Decreased to one fourth (d) Increased to 4 times

The length of a pendulum is halved. Its energy will
(a) Decreased to half
(b) Increased to 2 times
(c) Decreased to one fourth
(d) Increased to 4 times

Grade:Upto college level

2 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
2 years ago
Vikas TU
14149 Points
2 years ago
So the time period of a pendulum is directly proportional to the square root of its length. So, if the length increases, its time period also increase. It means that it takes longer to complete one oscillation. So when its length is halved, its time period is decreased by a factor of 2 .

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