3. What is the difference between the law of gravity and the theory of gravity?

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In physics a law describes a natural phenomenon, but does not attempt to describe how it works.

Newton's law of gravitation describes the attractive force F between two bodies with masses m1 and m2, which are a distance r apart.

/r²

Where G is the gravitational constant.

This is a law because it describes the force but makes not attempt to explain how the force works.

A theory is an explanation of a natural phenomenon. Einstein's General Theory of Relativity explains how gravity works by describing gravity as the effect of curvature of four dimensional spacetime.

Einstein also produced an equation which describes gravity. It may look simple, but in reality it is very complex and very hard to solve.

Gμν=

So, we have both a law and a theory of gravity.

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft