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Q.

Force of gravity between the earth and mass of 20 kg placed on its surface [[1]] N.


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Detailed Solution

Force of gravity between the earth and mass of 20kg placed on its surface is 196 N.
Force of gravity on an object due to earth is also known as the weight of the object and is calculated using the formula,
W = mg
Where, m= mass of the object,
g = Acceleration due to gravity which has a value of 9.8 m/s2 at the surface of the earth.
Given, Mass =20 kg
W=mg 
⇒  =20 × 9.8
 ⇒ W =196 N
 
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Force of gravity between the earth and mass of 20 kg placed on its surface [[1]] N.