(a) How much gravitational potential energy (relative to the ground on which it is built) is stored in an Egyptian pyramid, given its mass i

Question

(a) How much gravitational potential energy (relative to the ground on which it is built) is stored in an Egyptian pyramid, given its mass is about 8 ✕ 109 kg and its center of mass is 34.0 m above the surrounding ground?.

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Cherry 4 years 2021-07-31T17:54:56+00:00 1 Answers 29 views 0

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  1. thuthao
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    2021-07-31T17:56:41+00:00
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    Answer:

    2.66832\times10^{12}

    Or

    2,668,320,000

    Explanation:

    Potential energy is given as the product of mass, acceleration due to gravity and height.

    PE=mgh

    Where m is the mass of pyramid, g is acceleration due to gravity and h is height at any point.

    In reference to the earth, we substitute h for 34.0 m and g with 9.81 m/s2 then taking m as 8000000000 kg we get that

    PE=mgh=8000000*9.81*34.0=2,668,320,000 J

    In scientific notafion, this is expressed as 2.66832\times10^{12}

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