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1. Give an example of a situation where work done is zero.
2. Give two uses of an inclined plane.
3. Give some examples where pulley is used as a simple mach
4. What is the lead of a screw?
5. Why do we use a wedge?
6. Define input energy and output energy?
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lead is the axial advance of a helix or screw during one complete turn (360⁰) the lead for a screw thread is the axial travel for a single revolution pitch is defined as the axis distance between adjust thread on a helix or screw......lead angle is the between the helix and a plane of rotation
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