Answers

2015-10-24T22:00:19+05:30
Machines play an important role in our lives. Modern age is the age of machines. Almost all objects surrounding us including soap, pen, paper, cloth, TB, bicycle, motor, car, etc., are made by machines.A machine is a device which makes our work easier, faster and more convenient. It can do more work by applying less force. It helps us to gain force. It is used for transferring force. It can also change the direction of force. It does not help us to gain energy.Some examples of different kinds of machines are knife, cork opener, spanner, inclined plane, scissors, a screw, a wheel, a pulley and pliers. These are called simple machines.In science, broom is considered a simple machine. A small muscular force is applied to the handle of the broom by hand. Broom transfers this force to the floor where the work is done.Some machines are complex. A bicycle is an example of a complex machine. A complex machine is made up of a large number of simple machines. Complex machines are also called compound machines
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2015-10-25T12:41:55+05:30
Machines play an important role in our lives. Modern age is the age of machines. Almost all objects surrounding us including soap, pen, paper, cloth, TB, bicycle, motor, car, etc., are made by machines.A machine is a device which makes our work easier, faster and more convenient. It can do more work by applying less force. It helps us to gain force. It is used for transferring force. It can also change the direction of force. It does not help us to gain energy.Some examples of different kinds of machines are knife, cork opener, spanner, inclined plane, scissors, a screw, a wheel, a pulley and pliers. These are called simple machines.In science, broom is considered a simple machine. A small muscular force is applied to the handle of the broom by hand
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