Answer :
The weight of the man on earth is 882 Newtons.
We have a man of mass 90 Kg.
We have to determine his weight on Earth.
What is Weight ?
Weight is the force exerted by the earth on an object at the surface of the earth. Mathematically -
W = m x g
where -
m is the mass of object
g is acceleration due to gravity
According to the question -
The mass of the man (M) = 90 kg
Acceleration due to gravity (g) = 9.8 m/s²
Therefore, the weight of the man will be -
W(m) = M x g = 90 x 9.8 = 882 Newtons
Hence, the weight of the man on earth is 882 Newtons.
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