A solid iron cuboid of dimensions 10cm×4cm×2cm is gently released in kerosene of density 800kg m−3. Density of iron is 7.8g cm−3.
Determine:
a. (i) the weight of the cuboid in newtons
b. (ii) the upthrust acting on it in kerosene
c. (iii) whether the cuboid will sink or float and the net downward force, if any