Wednesday, January 11, 2012

(Late) Blog Torque!


This is a pool cleaner that we use at my house. I realized that the equation for torque, t=fr, applied to it.

In order to increase the amount of torque exerted I could lengthen my lever arm. For instance, the farther away my grip from the net, the more torque I have.

I could also increase my torque by increasing the force at which I swing the pool cleaner with.

Finally, I could also make the angle of my lever arm more perpendicular to the wrench, which would result in a larger r and therefore a larger F.

The moment of inertia concept also applies to the cleaner. If I grasp the cleaner closer to the netting, my moment of inertia would be smaller because my r or l is smaller. This also means that it would be harder to start or stop the pool cleaner.

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