SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Work is done on an object when the object moves in the SAME direction in which the force is applied. If you pull at an angle instead of in the direction in which the object moves, MORE of your force does work. The FARTHER you move an object, the more work you do.
Detailed explanation-2: -For work to be done, the force must be applied in the same direction that the object moves. Work is directly related to both the force applied to an object and the distance the object moves. It can be represented by the equation: Work = Force × Distance.
Detailed explanation-3: -Contrary to popular belief, machines do not increase the amount of work that is done. They just change how the work is done. Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied.
Detailed explanation-4: -What is true about all real machines? Work output < Work input. An “ideal friction-less” machine is imaginary.