[填空题]
The bolts on the cylinder head of andp3 hm ch7d(g*be9n +h hd9byp7a-)+iu +thhrengine require tightening to a torque of 389-hduy7pib h)+ +h rta $m \cdot N$ 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
