Power and Constant Speed Lifting · PhysicsBowl 2014 #31

Physics · mechanics

Problem

A toy crane exerts an upward force and delivers a useful power output of 0.100.10 WW to raise a block vertically at a constant speed. At what constant speed will this crane raise a 0.200.20 kgkg block? (Use g=10.0g = 10.0 ms2\frac{m}{s^2}) (A) 0.010.01 m/sm/s (B) 0.020.02 m/sm/s (C) 0.050.05 m/sm/s (D) 0.200.20 m/sm/s (E) 0.500.50 m/sm/s

Browse the problem library