we have discussed in the above paragraphs a number of activities which we normally consider to be work in day to day life. for each of these activities, ask the following questions and answer them.
1 what is the work being done on?
2 what is happening to the object?
3 who (what) is doing the work?
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Answer:
Work done on a body is equal to the increase in the energy of the body, for work transfers energy to the body. If, however, the applied force is opposite to the motion of the object, the work is considered to be negative, implying that energy is taken from the object.
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When a force causes a body to move, work is being done on the object by the force. Work is the measure of energy transfer when a force (F) moves an object through a distance (d). So when work is done, energy has been transferred from one energy store to another, and so: energy transferred = work done.
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