1.

4AA(4)ЗА51 A 2 g ball of glass is released from the edge of ahemispherical cup whose radius is 20 cm. Howmuch work is done on the ball by the gravitationalforce during the ball's motion to the bottom of thecup(1) 1.96 mJ9(2) 3.92 mJ(3) 4.90 mJ(4) 5.88 mJ

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correct option is (b)



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