Question
A 63.8 kg woman lifts herself 36.6 cm each time she does a chin-up. What force does she exert in lifting herself to the chin position?
And, how much positive work does she do in pulling herself up once?
And, how much positive work does she do in pulling herself up once?
Answers
Henry
a. F = m*g = 63.8 * 9.8 = 625.2 N.
b. Work = F*d = 625.2 * 0.366 = 228.8 J.
b. Work = F*d = 625.2 * 0.366 = 228.8 J.