Question

A mass of 32 kg is being pulled by a rope with a force of 148 N at an angle of 22°. What is the work done on the mass if it has been moved 7.4 m? Input your answer with 1 decimal place

Answer 1

W=mg=22.5 kg×9.8 m/s2=220.5 N W = m g = 22.5 kg × 9.8 m/s 2 = 220.5 N . By Newton's third law, we realize that the normal force exerted by the table on the box is equal to this value. The underlying logic is that the box is at rest, implying that the net force on it is zero.