A pendulum, with a 2.0 kg bob, is released from a height of 0.400 m and allowed to swing freely. Determine its minimum speed.(adsbygoogle = window.adsbygoogle || []).push({});

I got:

E_grav = E_kin

--> mgh = 1/2 mv^2

--> v = sqrt (2gh)

--> v = sqrt (2*9.8*.4)

--> v = 7.84 m/s

Is that right? It seems weird; so please tell me if i'm right or wrong. If wrong, please show me what I did wrong. Thanks a lot!

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# Pendulum Minimum Speed

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