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Author Question: The force of gravity (outside the Earth) attracting a mass m is proportional to the mass m and ... (Read 64 times)

CBme

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on: May 26, 2021
The force of gravity (outside the Earth) attracting a mass m is proportional to the mass m and inversely proportional to the square of the distance from the centre of the Earth. Find the work done in moving a mass that weighs 1 lb at the surface of the Earth to 10 miles above the surface. Assume the radius of the Earth is 4,000 mi. At the Earth's surface, a force of 1 lb is required to lift a mass of 1 lb.
◦ 51,420  ft ∙ lb
◦ 52,668  ft ∙ lb
◦ 48,193  ft ∙ lb
◦ 50,327  ft ∙ lb
◦ none of the above
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Marked as best answer by CBme on May 26, 2021

morrie123456

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Reply #1 on: May 26, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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CBme

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Reply 2 on: May 26, 2021
Great answer, keep it coming :)

xiaomengxian

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Reply 3 on: Yesterday
Excellent

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