Physics (AS & A Level) · May / June 2025 · Paper 12 · Question 19

A box of mass 4.9 kg is pushed at a constant velocity from point P at the bottom of an inclined plane to point Q at the top. The box is pushed by a force of 64 N acting parallel to the slope. The slope is inclined at an angle of 20° to the horizontal and the box moves through a vertical height of 5.8 m. [diagram: inclined plane with points P and Q, vertical height 5.8 m, angle 20°, force 64 N parallel to slope] What is the work done against the frictional force acting on the block between P and Q?

1. A280 J
2. B810 J
3. C960 J
4. D1100 J

As printed in the paper