Question

the door knob is an example of what of simple machine

Answer 1

Answer:

A door knob is a wheel and axle type of simple machine .

Reason : A door knob is used to open or close the door easily . A wheel and axle is a simple machine in which the axle attaches the object to the wheel . A door knob as an axle in the middle with a wheel . Therefore , a door knob is an example of a simple machine .

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