A classical mechanics problem by Fares Salem

Classical Mechanics Level 1

If an object weighs 30 N on Earth, how much would it weigh on the moon?


The answer is 4.96.

Fares Salem by Fares Salem , 22, Egypt

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3 solutions

Yogeshwar Chauhan
Jul 10, 2014

as the moon's gravity 1/6th w.r.t earth=30*1/6=5

2 Helpful 0 Interesting 0 Brilliant 0 Confused

If the answer is 5 then why the answer is given as 4.96.

Anuj Shikarkhane - 6 years, 11 months ago

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because gravity on earth =10,and gravity on the moon 1/6 gravity on the earth,. 9.8*1/6 =1.63

Biyan Zpenkal - 6 years, 10 months ago

I'm pretty sure its not exactly 1/6; it's just an approximation...

Sina Soltanieh - 6 years, 10 months ago
Biyan Zpenkal
Jul 24, 2014

W on earth = m.g on earth ,g on earth is 9.8 or 10 m/s 30 = 3.10,so the mass is 3 kg W on moon = m.g on moon ,g on moon =1.63 W on moon = 3*1.63 = 4.89

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Rifath Rahman
Sep 20, 2014

Moon's gravity is 1/6 th of earth so weight in moon 30/6=5 N

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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