a small mass of 0.75kg is attached to one end of a 1.25m long massless rod, and the other end is hung from a pivot. When the resulting pendulum is 30degrees from the vertical what is the magnitude of the torque about the pivot?(adsbygoogle = window.adsbygoogle || []).push({});

what i did:

-Fsin30 -mg = 0

Fsin30 = -mg

F = -14.7N

t = rFsin30

t = 1.25(-14.7sin30)

t = -9.2N

the answer is supose to be half of this what did i do wrong?

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# Pendulum problem - What is the magnitude of the torque?

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