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A simple pendulum has a certain periodic time.What would happen if the pendulum is oscillating in a lift which is stationary and suddenly starts going up..will the oscillations die instantly? pls explain??

A simple pendulum has a certain periodic time.What would happen if the pendulum is oscillating in a lift which is stationary and suddenly starts going up..will the oscillations die instantly? pls explain??


 

Grade:9

1 Answers

AKASH GOYAL AskiitiansExpert-IITD
419 Points
10 years ago

Dear Shivam

Apply a pseudo force on pendulum. initially downward force was mg only now downward  force will be mg+ma. as peudo force acts opposite to the direction of accelerating frame.

now just replace g by g+a called geffective in the expression of time period. so it wont die instantly but time period will be reduced as g comes in the denominator

All the best.                                                           

AKASH GOYAL

AskiitiansExpert-IIT Delhi

 

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