In a planet the weight of a body of mass 5kg is 75N . What is the acceleration due to gravity in that planet? The same body weighs 50N on earth. What is its mass on earth? What will be its weight on the moon?
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Answer:
Given that in a planet,
Mass (m) = 5 kg
Weight (W) = 75N
Weight = Mass*Acceleration due to gravity
75 = 5*g
15 m/s² = g
When the same body weighs 50 N on earth, it consists of a mass of 5 kg only but the difference is the acceleration of gravity on earth has changed. This is because Mass is constant and it never changes.
On Moon having a mass of 5 kg and acceleration due to gravity of 1.6 m/s² generally, it will weigh =
W = 5*1.6
= 8 N
I hope this helps.
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