A wrench with a length of $20 c m$ $20 cm$ is being used to unscrew a $\frac{4}{3} c m$ $4/3 cm$ bolt. If a torque of $1 N m$ $1 Nm$ is needed to overcome the friction keeping the bolt in place, what is the minimum torque that must be applied to the wrench to unscrew the bolt?

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A wrench with a length of $20 c m$ $20 cm$ is being used to unscrew a $\frac{4}{3} c m$ $4/3 cm$ bolt. If a torque of $1 N m$ $1 Nm$ is needed to overcome the friction keeping the bolt in place, what is the minimum torque that must be applied to the wrench to unscrew the bolt?

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Answer 1 · 2016-05-17T18:13:14

The torque is the same to screw and to unscrew.

Explanation:

I suppose that you are asking for the perpendicular force applied at the wrench extremity to get a torque of $1$ $1$ [Nm]. In this case $f$ $f$ value can e extracted from the equality $f \times 0.20 = 1$ $f times 0.20=1$ . Solving for $f$ $f$ we obtain $f = 5$ $f = 5$ [N]

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A wrench with a length of $20 c m$ $20 cm$ is being used to unscrew a $\frac{4}{3} c m$ $4/3 cm$ bolt. If a torque of $1 N m$ $1 Nm$ is needed to overcome the friction keeping the bolt in place, what is the minimum torque that must be applied to the wrench to unscrew the bolt?

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Explanation:

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A wrench with a length of 20 cm20cm20 cm is being used to unscrew a 4/3 cm43cm4/3 cm bolt. If a torque of 1 Nm1Nm1 Nm is needed to overcome the friction keeping the bolt in place, what is the minimum torque that must be applied to the wrench to unscrew the bolt?

1 Answer

Explanation:

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Impact of this question

A wrench with a length of $20 c m$ $20 cm$ is being used to unscrew a $\frac{4}{3} c m$ $4/3 cm$ bolt. If a torque of $1 N m$ $1 Nm$ is needed to overcome the friction keeping the bolt in place, what is the minimum torque that must be applied to the wrench to unscrew the bolt?