1. You and your roommate are dragging an exercise machine (mass 58.9 kg) down a 73.4 meter long hall, from the stair landing, where (because of union rules) the UPS driver left it, to your dorm room. The coefficient of friction with the floor is u = 0.917.
a) The mechanical work you do in the process is how many kJ?
b) Assuming you and your roommate move at 1.53 m/s, your joint mechanical power output is how much in W?
The solution is found using the formula work equals force x distance. Joint mechanical power output is examined.