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Question 1

newton’s law of gravitation

Answer 1

force of attraction between two test masses M1 and M2 separated by distance R is modelled by the given equation:

Question 2

gravitational field strength g

Answer 2

is defined as the gravitational force per unit mass at that point

Question 3

gravitational field

Answer 3

is a region of space in which a mass experiences an attractive force due to presence of another mass

Question 4

gravitational potential

Answer 4

is the work done per unit mass in bringing a small test mass from infinity to that point

Question 5

gravitational potential energy

Answer 5

is the work done in bringing a that mass m from infinity to that point

Question 6

simple harmonic motion

Answer 6

is an oscillatory motion whereby the acceleration is always proportional to and opposite in direction to the displacement from equilibrium position

Question 7

critical damping

Answer 7

the system does not oscillate and damping is just adequate such that the system returns to its equilibrium position in the shortest possible time