Question
(a) Calculate the force the woman in Figure 7.45 exerts to do a push-up at constant speed, taking all data to be known to three digits. (b) How much work does she do if her center of mass rises 0.240 m? (c) What is her useful power output if she does 25 push-ups in 1 min? (Should work done lowering her body be included? See the discussion of useful work in Work, Energy, and Power in Humans.
Question Image
1. $490 \textrm{ N}$
2. $118 \textrm{ J}$
3. $98 \textrm{ W}$
Solution Video