[填空题]
The bolts on the cylinder head of an engine + 5h;s3w sb8 aqt t;o*bhq)mczrequire tightening to a torqueoz n70 *hcz:mfvhd8/ j of 38*fo7 cjhd:8zvz/m n 0h $m \cdot N$ 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
