A sack of rice is weighed on the surface of the Earth at a place where the value of g is 9.8m/s2. Answer the following:
a. (i) Define mass and weight.
b. (ii) If the weight of the sack is 147N, calculate its mass.
c. (iii) The same sack is taken to the Moon where g=1.63m/s2. Find its weight on the Moon.
d. (iv) Will the mass of the sack change on the Moon? Give reason for your answer.