Answers

2014-07-28T15:45:42+05:30
The simple machine is like an oven. It is used in our daily life. 
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2014-07-28T15:57:01+05:30
Any non powered device that reduces efforts to do any work is called a simple machine
Some simple machines are
Hammer
Screw
Screw Driver
Wheel and Axle

Description of a screw driver : It is a device that is commonly used to open or tighten up the screws.It is made up of metal with a plastic handle to avoid any electric shock.
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