A 15N body of weight rests on the floor. We bind the body to the lower end of a dynamometer, which we hold with our hand as in the adjacent shape.
- Draw the forces exerted on the body before weigh it with the dynamometer and measure the measures.
- Calculate the force that the body receives from the floor, if you pull the dynamometer we get 7N.
- What happens if we pull more to indicate that the dynamometer is 17N?