SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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54 N
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6.0 J
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54 J
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27 J
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Detailed explanation-1: -If a force of 10.0 N is used to lift a box a distance of 0.9 m, how much work is done? 9.0 J.
Detailed explanation-2: -Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or newton • meter (N • m).
Detailed explanation-3: -In order to accomplish work on an object there must be a force exerted on the object and it must move in the direction of the force. If either of those conditions are not met, then there is no work.
Detailed explanation-4: -Work is said to be done when displacement takes place in the direction of force. When the force makes an angle with the direction of force the component of force along the direction of displacement is taken. If the force is perpendicular to the direction of displacement, work done is zero.