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Q1) Inclined planes are widely used to move heavy loads over vertical obstacles; examples vary from a ramp used to load goods into a truck, to a person walking up a pedestrian ramp, to an automobile or railroad train climbing a grade. ... The screw consists of a narrow inclined plane wrapped around a cylinder.

Q2) In one, called a second-class lever, the resistance force lies between the effort force and the fulcrum. A nutcracker is an example of a second-class lever. ... In a third-class lever, the effort force lies between the resistance force and the fulcrum. Some kinds of garden tools are examples of third-class levers.

Explanation:

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