Question

Write Short Answer for the following questions: (These are to be answered about 50
words each).
18. Define force. List out the effects of force in an object
19. What is a pulley and what does it help to make work easier for us ?

Answer 1

18.A force acting on an object causes the object to change its shape or size, to start moving, to stop moving, to accelerate or decelerate. When there’s the interaction between two objects they exert a force on each other, these exerted forces are equal in size but opposite in direction.

19.The pulley, a simple machine, helps to perform work by changing the direction of forces and making easier the moving of large objects. When thinking of pulleys, most people think of the type of pulley that allows a person to redirect the direction of a force.

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