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Hang a pen by a piece of string. 1.Is the pen at rest or in motion,Hang a pen by a piece of string.1.Is the pen at rest or in motion, explain.
2.are there forces acting of the pen?explain.

cut the string with a pair of scissors
3.what happens to the pen?what could have caused the pen's motion?explain.

place a book on the top of a table
4.is the book at rest, or in motion?explain.
5.are there forces acting on the book?explain.

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Force of Gravity is acting on the hanging pen.
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