Question

Two spheres of mass 10 g and 100 g each falls on the two pans of a table balance from a height of 40 cm and 10 cm, respectively. If both are brought to rest in 0.1 second, determine the force exerted by each sphere on the pans.

Answer 1

Find the velocity acquired by each sphere using `v^(2) = u^(2) + 2 as`
Find the rate of change of momentum of a sphere `= F = (m(v-u))/(t)`
The force exerted by a sphere = weight (w) + F.