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In the motion of a simple pendulum(SHM), The component of mg, that means mgsin@ is the force that restores or tends the bob to the mean position(Equilibrium). But I dont understand y it is written as negative. That means, I found in my NCERT Text that F= -mgsin@. And please explain detaily the expression for torque.???
SINCE IT IS RESTORING DISPLACEMENT IS REDUCED SO TO INDICATE THAT IT IS DECREASING THEY HAVE PUT -VE SIGN
it is -fsin@ bcoz of oppositr direction
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