Chapter 7, Problem 68GP

Predict/Calculate A sled with a mass of 5.80 kg is pulled along the ground through a displacement given by $d^{\prime }$ = (4.55 m) $\stackrel{⌢}{x}$. (Let the x axis be horizontal and the y axis be vertical.) (a) How much work is done on the sled when the force acting on it is $\stackrel{\to }{F}$ = (2.89 N) $\stackrel{⌢}{x}$ + (0.131 N) $\stackrel{⌢}{y}$ (b) How much work is done on the sled when the force acting on it is $\stackrel{\to }{F}$ = (2.89 N) $\stackrel{⌢}{x}$ + (0.231 N) $\stackrel{⌢}{y}$? (c) If the mass of the sled is increased does the work done by the forces in parts (a) and (b) increase, decrease, or stay the same? Explain.