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Question
Calculate the force with which you attract the earth.
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Solution
Consider that a man is standing on the surface of the Earth.
Force acting on the man = mg
Here, m = mass of the man and g = acceleration due to gravity on the surface of earth (=10 m/s2)
Assume that the mass of the man is equal to 65 kg.
Then F = W = mg = 65 × 10 = 650 N = force acting on the man
∴ By Newton's third law (action-reaction are always equal), the man is also attracting the earth with a force of 650 N in the opposite direction.
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