[填空题]
The bolts on the cylinder 8.eav7 uty;1iv)f qhx head of an engine require tightening to a tord2i w/ (llt it6:roez73ipj6hque of 38 i i63hp7wde lz(rt6oj/itl2:$m \cdot N$ If a wrench is 28 cm long, what force perpendicular to the wrench must the mechanic exert at its end? N If the six-sided bolt head is 15 mm in diameter, estimate the force applied near each of the six points by a socket wrench (Fig. 8–41). N
Post time 2025-2-18 20:00:22
