at the bottom of a swing for a pendulum a mass on a string it has a speed of v a

Question

at the bottom of a swing for a pendulum a mass on a string it has a speed of v a. is the acceleration zero or non zero? if non zero in what direction does it point? b. at the bottom, is there only centripetal acceleration or is it exactly cancelled by the gradational acceleration, or is it exactly cancelled by the gravitational acceleration or is it a sum of the two? c. is the tension in the string zero or non zero ? if non zero what value would it have (in terms of m, L, v, g) d. what is the total forces on the mass at the bottom of the swing? is it the same as the tension in the swing?

Explanation / Answer

no it is nonzero it is in downward direction = acc.n due to gravity

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