Chapter 3.1, Problem 2aT

A glider, glider A, Is pulled by a suing across a level, frictionless table. The string exerts a constant horizontal force.

1. How don the net work done on the glider in moving through a distance 2d compare to the net work done on the glider in moving through a distance d?

Assume that the glider starts from rest. Find the ratio of the speed after the glider has moved a distance 2d to the speed of the glider after moving a distanced d. Explain.

2. A siting pulls a second glider, glider B, across a frictionless table. The string exerts the same force on glider B as did the string on glider A. The mass of glider B is greater than that of glider $\left(m_B>m_A\right)$ . Both gliders start front rest.

After each glider has been pulled a distance d, is the kinetic energy of glider A greater than, Iess than, or equal to the kinetic energy of glider B? Explain.