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A simple pendulum of length 1 m with a b...

A simple pendulum of length 1 m with a bob of mass m swings with an angular amplitude `30^@`.
Then (g = `9.8 m/sec^2`)

A

time period of pendulum is 2 sec

B

tension in the string is greater than mg cos `15^@` at angular displacement `15^@`

C

rate of change of speed at angular displacement `15^@` is gsin `15^@`

D

tension in the string is mg cos `15^@` at angular displacement `15^@`

Text Solution

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The correct Answer is:
B, C
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