A mechanic can exert 113Nm of torque on his wrench. If the mechanic wants to create 2 times more torque with a wrench that is 3 times shorter, how does his force need to change?
1 Answer
Nov 22, 2015
It needs to increase by a factor of 6.
Explanation:
Torque is the cross product of the position vector and the force:
This means that if
To double the force he would therefore need to increase