Answer the following (please answer short)
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Ans 1. Two effects of Force are-
a.It can change the state of movement of the body on which force is applied
(ii) It can change the shape and size of an object
ANS 2. Simple machines are useful and important because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities.
ANS 3. A force that attracts any two objects with mass .This force is known as Gravitational force.
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