Jellysarconidn
Answered

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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. 09.06.2014

Sagot :

LuXaRianPriNceSs009idn
1. Motion
2.yes, gravitational force and normal force
3.The pen will fall because of the gravity 
4.at rest
5. there are force acting on the book and that is the gravitational force
 
Mizuidn
1) The pen is at rest.
2) Yes. The forces acting on the pen are the tension force and the force of gravity.
3) The pen falls to the ground. The force of gravity made the object fall.
4) The book is at rest.
5) Yes. The forces acting on the book are the force exerted by the table on the book and the force of gravity.

--Mizu
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