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a) Show that the total energy of a simple pendulum undergoing oscillations of small amplitude theta...

a) Show that the total energy of a simple pendulum undergoing oscillations of small amplitude theta in radians, is E=0.5m*g*L*theta. Use the approximation cos theta=1-0.5*theta^2 for small theta

b) Using the conservation of energy, find an expression for its speed as it passes through theta=0

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a) th ene ngyou have mentioned 0.5m*g*l*theta but its 0.5 m*g*l*theta^2

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