Write short notes on inclined plane, Screw and Wedge. ( Simple Machines )
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(Screw ) A screw is a sharp piece of threaded metal similar to a nail.
(Inclined plane) An inclined plane ,also known as a ramp, is a flat supporting surface tilted at an angle ,with one end higher than end the other.
(Wedge) A wedge is a triangular shaped tool ,and is a portable inclined plane.
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