A clerk can lift containers a vertical distance of 1 m,or roll them up a 2-m-long ramp to the same elevation.With the ramp,the applied force needed is

Question

Quizplus · Accepted Answer

Using the ramp reduces the vertical distance that the clerk needs to lift the containers, which means less work is needed. The work done in lifting an object is given by the equation W = F × d, where W is work, F is force, and d is distance. Since the ramp reduces the distance by half, the force needed must be reduced by the same factor (assuming no energy is lost due to friction or other factors). Therefore, the applied force needed with the ramp is half as much as without it. Therefore, the answer is A.

A Clerk Can Lift Containers a Vertical Distance of 1