1.

A boy tied a string to one of the ends of a box and started sliding the box on a playground. He then observed a circular track and rushed there and completed half revolution of the track with his box. The work done by friction on the box is _____.

Answer»

A boy tied a string to one of the ends of a box and started sliding the box on a playground. He then observed a circular track and rushed there and completed half revolution of the track with his box. The work done by friction on the box is _____.




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