Question

ACTIVITY OF INTEGRATION.
Jaden can pull a load of mass 120kg along a 3m inclined wooden plane on to a lorry 0.9m high with a rope whose tension is 600N.
Instead of pulling, Jaden can also lift a load vertically up a height of 0.9m onto the lorry.
Advise Jaden, with reasons, which method would be easier to use to raise the heavy load onto the back of the lorry.

Answer 1

In this scenario, it would be easier for Jaden to lift the load vertically up a height of 0.9m onto the lorry instead of pulling it along the inclined plane.

When pulling the load along the inclined plane, Jaden would have to exert force not only to overcome the force of gravity pulling the load downwards, but also to overcome the component of the weight acting parallel to the inclined plane. This would require more force and effort from Jaden.

On the other hand, when lifting the load vertically up a height of 0.9m onto the lorry, Jaden only has to overcome the force of gravity pulling the load downwards. The tension in the rope of 600N would be enough to lift the load vertically without the added force required to overcome the component of the weight acting parallel to the inclined plane.

Therefore, lifting the load vertically onto the lorry would be the easier method for Jaden to use to raise the heavy load onto the back of the lorry.