Drive a screw completely into a block of wood

Reference no: EM13663014

It takes 20 turns to drive a screw completely into a block of wood. Because the friction force among the wood and the screw is proportional to the contact area among the wood and screw, the torque required for turning the screw increases linearly by the depth the screw has penetrated into the wood. If the maximum torque is 12 Nm when the screw is completely in the wood, what is the total work in Jolues needed to drive the screw?

Reference no: EM13663014

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