Which advantage does a screw have over a nail?
A.) A screw is able to reduce the total amount of work needed.
B.) A screw is pushed through a shorter distance.
C.) A screw can be inserted with less force than a nail.
D.) A screw allows the force to be applied in a more convenient direction.
2 answers
C. A screw can be inserted with less force than a nail.
Lifting the weight without a pulley requires a force of 400 newtons over the distance of 4 meters how do these values change when the pulley is applied