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A body constrained to move along the Z-axis of a co-ordinate system is subjected to a constant force vectors F =(i +2ȷ +3k)N

1. What is the magnitude of force along z direction.

2. What is the work done by this force in moving the body over a distance of 4m along z-axis.

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1. 3N

2. Work done = Force × Displacement = 3 × 4 = 12J.

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