Physics - 1 IP Tension at the Bottom A ball of mass m is attached to a string of length L and released from rest at the point A in the figure(Figure 1

Physics - 1 IP Tension at the Bottom A ball of mass m is...

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1)IP Tension at the Bottom A ball of mass m is attached to a string of length L and released from rest at the point A in the figure. (Figure 1). Show that the tension in the string when the ball reaches point B is 3mg, independent of thelength l. Give a detailed physical explanation for the fact that the tension at point B is independent of the length l.

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