[填空题]
The bolts on the cylinder head of an engine require q tyqmg)v mv),(n+fi7 tightening to a torque o,u rbn- 0/k7noq fxvz)f 38 70xkon,vr-bz)un fq / $m \cdot N$ 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
