A student uses a spring scale to exert a horizontal force on a block, pulling the block over a smooth floor. The student repeats
the procedure several times, each time pulling the block from rest through a distance of 1.0 m. For which of the following graphs of force as a function of distance will the block be moving the fastest at the end of the 1.0m?
I know this (pic attached) is the answer, but I don’t understand why…pls help me out thank you!
I know this (pic attached) is the answer, but I don’t understand why…pls help me out thank you!
1 answer:
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Answer:
Moment of the force is 20 N-m.
Explanation:
Given:
Force exerted by the person is,
Distance of application of force from the point about which moment is needed is,
Now, we know that, moment of a force 'F' about a point at a perpendicular distance of 'd' from the same point is given as the product of the force and the perpendicular distance.
Therefore, the moment of the force about the end of the claw hammer is given as:
Hence, the moment of the force exerted by the person about the end of the claw hammer is 20 N-m.