Question

Constar The bolts on the cylinder head of an engine require tightening to a torque of 90 m.N. Part A If a wrench is 28 cm long, what force perpendicular to the wrench must the mechanic exert at its end? Express your answer to two significant figures and include the appropriate units. Fwrench = Value Units Submit Request Answer Part B If the six-sided bolt head is 15 mm across, estimate the force applied near each of the six points by a socket wrench. (Figure 1) Express your answer to two significant figures and include the appropriate units. HÅ. O ? Figure < 1 of 1 Fboit = Value Units - 28 cm Submit Request Answer En bok Ton wrench Provide Feedback

Answer 1

A ) The  torque is given 90 N m,

the length of wrench r = 28 cm = 0.28 m , Let the required force be F ,

so torque = F r

so , 90 = 0.28 x F

or F =321.43 N or 320 N

B)

The  torque is given 90 N m,

the length of bolt r = 15mm = 0.015 m , Let the required force be F ,

so torque = F r

so ,force is 6000 N