In most circumstances, the normal force acting on an object and the force of static friction do zero work on the object. However, the reason that the work is zero is different for the two cases. Explain why each does zero work.?

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Answers (6)

kaijiang 10-10-2012
kaijiang - Massachusetts Institute of Technology (MIT) (MA)
The conventional drive can no more do the job since the viewpoint between the normal drive along with the way of motion is often xc°. Noise chaffing normally really does absolutely no do the job since there is not any mileage whereby the actual push is definitely put on.
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dharmaveer 28-01-2013
dharmaveer - Allahabad University
"With aspects, the traditional power (at times N) would be the element, English-Gothic to the exterior regarding make contact with, on the contact drive exerted by using an object by simply, by way of example, the top of an level or maybe rampart, stopping the object via penetrating the counter. The normal force is amongst the different parts of the floor impulse pressure and could overlap with it, e.g. thinking about anyone standing up nonetheless on the floor, whereby the earth effect drive lowers for the convention drive. In an additional frequent circumstances, somebody who is item hits a surface with a few speeding, along with the floor could tolerate that, the standard pressure offers up an instant slowing, that could be based upon the flexibility with the area"
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