A solid steel block shows a reading of 4.9kN on a spring balance at the geographical poles where g=9.83m/s2. Use this information to answer the questions below:
(i) Express the given reading in newtons.
(ii) Determine the mass of the steel block.
(iii) At the equator, g is 9.78m/s2. Calculate the weight of the same block at the equator.
(iv) Compute the percentage difference between the block’s weight at the poles and at the equator, showing all steps clearly.