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How much work, in Newtons, is required to lift a 20.4-kg (45lb) plate from the ground to a stand that is 1.50 meters up?

ASAP PLS

Sagot :

ROTRUYidn

Answer:

Explanation:

Work, U, is equal to the force times the distance:

U = F · r

Force needed to lift the weight, is equal to the weight: F = W = m · g

so:

U = m · g · r

   = 20.4kg · 9.81 [tex]\frac{N}{kg}[/tex] · 1.50m

   = 35.316 [tex]\frac{N}{m}[/tex]

   = 35.316 W

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