The solution for this problem is:
With a mass of 10 mg or convert this into kilograms by:
We know that 1 mg = 1x10^-6 kilograms, so solving this will give us
10 * 10^ -5 in kilograms.
Then, we compute a force of ma F=ma where m is the mass and acceleration is m/s^2
F = 0.00001 [(2.5m/s^2)/ (0.16 m)]
= 3.9 * 10 ^ -4 N or F=.0.0004 N