[填空题]
The bolts on the cylinz1xjb :;2j9s qr-xscnder head of an engine require tightp3br7-( py l:w/gnmf4; tk pizening to a torque of 38 i tnr37w(4ppy f:g ;kb/zm- lp$m \cdot N$ 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
