What is meant by free fall?
(N/A) Free fall is a state in which an object falls towards the Earth solely under the influence of gravitational force,with no other forces (like air resistance) acting upon it. During free fall,the object experiences a constant acceleration known as the acceleration due to gravity,denoted by $g$,which is approximately $9.8 \ m/s^2$ near the Earth's surface.
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The value of $g$ on the earth's surface is $9.8 \, m s^{-2}$. Suppose the earth suddenly shrinks to one-third of its present size without losing any mass. What is the value of $g$ on the surface of the shrunk earth (in $, m s^{-2}$)?
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View SolutionThe acceleration due to gravity at the moon's surface is $1.67 \, m s^{-2}$. If the radius of the moon is $1.74 \times 10^{6} \, m$,calculate the mass of the moon. (Use $G = 6.67 \times 10^{-11} \, N m^{2} kg^{-2}$)
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