Term
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Definition
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| gravitational potential energy. |
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Definition
| the force of gravity acting on somehting and giving it kinetic energy. |
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Term
| WHat is effiecientcy and formula to find it |
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Definition
how much of the energy you gave to the machine was transferred to the load by the machine.
Efficiency = Work done by lever on load / Work done on lever by effort force X 100% |
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Term
| Why do machines lose energy every time they do work? |
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Definition
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Term
| examples of usefull friction |
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Definition
| holding things, walking, screws, nails, shoe laces. |
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Term
| you ate a sandwich then went for a walk. what type of energy is transformed and what is it transformed into. |
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Definition
| From chemical to mechanical (food to the walk) |
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