Question

Certain critical bolts on a bicycle (like the ones that attach the handlebars) must not be over (or under) tightened. You might see a 'max torque' value etched in the metal next to the bolt. I wish to apply the maximum recommended torque of 17.5 N?m to the bolts holding the handle bars in place. To achieve this torque, with what force must I pull on the end of a 29.0 cm -long wrench if I pull (a) at right angles to the wrench shaft and (b) at 117 ? to the wrench shaft?

Find F?

Part B

F? =

360

N

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Answer 1

F = 17.5/ 0.29 = 60.34 N

B)

F = /d *sin 117

= 17.5/ (0.29*sin117) = 67.72 N