Question

How is the electric pencil sharpener used? Explain in some physics terms how it works.

Answer 1

In an electric pencil sharpener, some of the simple machines include an oscillating motor, which contains a pulley system of rods and chains, two gears and a cam that create the motion of the motor.

Read more: http://www.ehow.com/how-does_4598341_what-simple-machines-pencil-sharpener.html#ixzz2uajnGrrN

Answer 2

omiigod thx ^_^