The correct option is option 2.
These two machines are being used together to reduce the amount of force needed to move the load up to the higher surface. The inclined plane decreases the effort required by increasing the distance over which the force is applied, and the wheel and axle system allows for smoother motion with less effort due to the reduced friction.
The diagram shows a person using a cart to move a 50 kg load up an inclined plane. There are two simple machines depicted in the diagram:
1. Inclined Plane: This is the ramp on which the person is moving the cart. An inclined plane is a flat surface tilted at an angle to the horizontal. It allows one to exert less force over a greater distance to move objects up or down a certain height.
2. Wheel and Axle: The cart itself appears to have wheels. The wheel and axle is a simple machine that consists of a larger wheel (or wheels) attached to a smaller cylinder, the axle, both rotating together to amplify force.
The correct answer is inclined plane; wheel and axle.