A) \[mgl\]\[(1-cos\theta )\]
B) 0.5\[mgl\]
C) \[mgl\]
D) 0.5 \[mgl\]
Correct Answer: A
Solution :
Here: length of pendulum\[=l\] Maximum angular displacement\[=\theta \] mass of the bob\[=m\] Now height of the bob at maximum angular displacement is \[h=l-l\cos \theta =l(1-\cos \theta )\] Also at the end of the displacement kinetic energy of the bob = potential energy of the bob \[h=mgh=mgl\text{ }(1-cos\theta )\]You need to login to perform this action.
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