Physics, 28.01.2020 22:05 heartprague

Emmett is lifting a box vertically. which forces are necessary for calculating the total force? . a. fp, ff, and fg. b.fp and fn. c. p, fg, and ff. d. fp and fg

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Answer from: Jojoahmed99

d. Fp and Fg

Explanation:

In a context where a person is lifting an object you have to consider the vertical forces.

Fg stands for the gravitational force: the attractive force exerted by the Earth on the object in virtue of the masses and equals the mass of the object times the gravitational acceleration. This product is the weight of the object.

The other vertical force, which must counteract the weight of the object, is the upward force applied on the object. It is usual fo use the notation Fp for the pull force using a pulley system.

In this scenario the net force equals the difference Fp - Fg.

Answer from: marquezsturgis

Assuming that Fp is referring to "Force of emmet", the forces that are necessary for calculating the total force is : D. Fp and Fg

Lifting vertically will not technically have any effect to frictional force Ff. The normal force FN also not important

hope this helps

Answer from: Quest

Nps pollution is caused by rainfall or snowmelt moving over and through the ground. nonpoint source pollution can include: excess fertilizers, herbicides and insecticides from agricultural lands and residential areas. oil, grease and toxic chemicals from urban runoff and energy production

Answer from: Quest

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this. hope that you like the video and that it explains more in detail to you.

that is the link.

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Emmett is lifting a box vertically. which forces are necessary for calculating the total force? . a...

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