Oscillations:
1.) given a simple pendulum ; a) what is the condition so that its motion will be simple harmonic. b) what will be the restoring force. c) show that the period of SHM is given by T=2π (l/g) ^ 1/2 where l is the length of the pendulum.

Question

anonymous · Answer

did you get a) and b)?

anonymous · Answer

I haven't got it yet. Sorry.

anonymous · Answer

a) is that the angle subtended is small...
b) what's the only force acting here?

anonymous · Answer

a) there is no given angle.
b) it is supposed to be given a force so that the simple pendulum would move, but our professor haven't said it, CLEARLY.

radicalsniper · Answer

I think algebraic gave the answer :))

anonymous · Answer

sure he did.

anonymous · Answer

the answer to a) is that the angle subtended is small...
b) what's the only force acting here? gravity: mgsin(theta)

these are facts you should be looking up in your textbook