Test Academy | A block of mass 2kg is released from A on the track that is one quadrant of a circle of radius 1m. It slides down the track and reaches B with a speed of 4 ms⁻¹ and finally stops at C at a distance of 3m from B. The work done against the force of friction is 10 J, 20 J, 2 J, 6 J

Question

A block of mass 2kg is released from A on the track that is one quadrant of a circle of radius 1m. It slides down the track and reaches B with a speed of 4 ms⁻¹ and finally stops at C at a distance of 3m from B. The work done against the force of friction is

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10 J
20 J
2 J
6 J

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