• (A) In lifting up a weight of 100 kg at a velocity of 3 m/sec but accelerating upwards at 0.5 m/sec
• (B) In lowering a weight of 100 kg along an a inclined plane at an angle of 45^o with
• (C) In lifting up a weight of 100 kg at a constant speed of 3 m/sec
• (D) In lowering the weight at a constant speed of 3 m/sec