A person of mass M is, sitting on a swing of length L and swinging with an angular amplitude θ0. If the person stands up when the swing passes through its lowest point, the work done by him, assuming that his centre of mass moves by a distance l (l

\(Mgl\left( {1 - \theta _0^2} \right)\)

\(Mgl\left( {1 + \theta _0^2} \right)\)

\(Mgl\left( {1 + \frac{{\theta _0^2}}{2}} \right)\)

A person of mass M is, sitting on a swing of length L and swinging wit

1.	A person of mass M is, sitting on a swing of length L and swinging with an angular amplitude θ0. If the person stands up when the swing passes through its lowest point, the work done by him, assuming that his centre of mass moves by a distance l (l << L), is close to:
A.	\(Mgl\left( {1 - \theta _0^2} \right)\)
B.	\(Mgl\left( {1 + \theta _0^2} \right)\)
C.	Mgl
D.	\(Mgl\left( {1 + \frac{{\theta _0^2}}{2}} \right)\)
Answer» C. Mgl

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A person of mass M is, sitting on a swing of length L and swinging with an angular amplitude θ0. If the person stands up when the swing passes through its lowest point, the work done by him, assuming that his centre of mass moves by a distance l (l << L), is close to:

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