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Question

Which of the following devices are not simple machines?
  1. Saw
  2. Screw
  3. Bicycle
  4. Crane

A
Crane
B
Saw
C
Bicycle
D
Screw
Solution
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Given :Which of the following devices are not simple machines?

Solution :
A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force.
Complex machines can be created by combining simple machines. They can be as small as a mechanical watch or as large as a construction crane.
Hence we can say that bicycle and crane are not the example of simple machines.

The Correct Opt=C and D

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