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Question
Which group has articles belonging to the same class of simple machines?
Which group has articles belonging to the same class of simple machines?
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Solution
The correct option is C S
Solution:1. A simple machine is a mechanical device that changes the direction or magnitude of a force.2. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force.3. A simple machine uses a single applied force to do work against a single load force. 4. Ignoring friction losses, the work done on the load is equal to the work done by the applied force. 5. The machine can increase the amount of the output force, at the cost of a proportional decrease in the distance moved by the load.
Hence D is the correct option
Solution:
1. A simple machine is a mechanical device that changes the direction or magnitude of a force.
2. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force.
3. A simple machine uses a single applied force to do work against a single load force.
4. Ignoring friction losses, the work done on the load is equal to the work done by the applied force.
5. The machine can increase the amount of the output force, at the cost of a proportional decrease in the distance moved by the load.
Hence D is the correct option
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