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3 years ago

A box of 5kg is lifted 10m. how much work is done?

Physics

1 answer:

Black_prince [1.1K]3 years ago

7 0

Answer:

500 [J].

Explanation:

1) the rule is: W=E₂-E₁, where W - required work, E₂ - energy after lifting, E₁ - energy before lifting;

2) energy: E=mgh, where m - mass, g≈10 [N/kg], h - height;

3) then the required work:

W=mgh₂-mgh₁=m*g*(h₂-h₁), where (h₂-h₁)=10 [m.]

finally, W=5*10*10=500 [J].

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g In 1956, Frank Lloyd Wright proposed the construction of a mile-high building in Chicago. Suppose the building had been constr

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In other words the acceleration can be described as

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This equation can be differentiated with respect to the radius of change, that is

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At the same time since Newton's second law we know that:

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Finally to find the change in weight it is necessary to differentiate the Force with respect to the acceleration, then:

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4 years ago

Jon's bathtub is rectangular and its base is 18 ft2. (a) How fast is the water level rising if Jon is filling the tub at a rate

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V = 18h

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3 years ago

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Answer:

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