- #1
IB
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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.
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!
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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