Question

Give reason:-
1.) Not all the energy put into a machine is use to do work.
2.) It easier to push a load up in an incline plane then lift it up vertically through the same height.
3.) It is easier to fix one plant to another using a screw rather than a nail.


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Answer 1

Answer:

1 . yes it was working he was machine

Answer 2

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Answer:

1) All machines are subject to energy conservation in that no machine can output more energy (do more work) than the energy put into it. Workout is less than or equal to Workin, or Energyout is less than or equal to Energyin. In other words, no machine can be more than 100% efficient

2) Since less effort is needed in lifting a load to a higher level by moving over an inclined plane as compared to that in lifting the load directly, an inclined plane acts as a force multiplier. This is because the mechanical advantage of an inclined plane is always greater than 1

3) While nails have more flexibility, screws have more tensile strength. Tensile strength refers to a material's ability to resist breaking under pressure

Explanation:

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