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Statement-1 `:` During the oscillation so f a simple pendulum, the direction of its acceleration at the mean position is directed towards the point of suspension and at exteme position is direction towards the mean position . Statement-2 `:` The directio of acceleration of a simple pendulum at an instant is decided by the tangential and radial components of weight at that instant.A. Statement -1 is true, Statement-2, Statement -2 is correct explanation of statement-1.B. Statement-1 is true, Statement-2 is true, Statement-2 is not a correct explanantion of Statement-1.C. Statement-1 is correct, Statement-2 is false.D. Statement-1 is false, Statement-2 is true. |
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Answer» Correct Answer - d When the length of pendulum makes an angle `theta` with the vertical direction, then the tangential component of weight `=mg sin theta` and radial component of weight `=mg cos theta. ` At extreme position, `theta` is maximum, so `mg sin theta ` is maximum, hence accelerated is directed towards mean position. At the mean position `theta=0`, so `mg sin theta ` is zero. The radial component of weight `=mg cos 0^(@)=mg` will provide the acceleration towards the point of suspension. |
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