Question

Calculate the force of kinetic friction on a 12.3 kg mass if its coefficient of kinetic friction is 0.137

Answer 1

Step-by-step explanation:

All we need here is the equation for frictional force, which is

f = μ
`F_n` where
`F_n=mg` That's normal force which is the same thing as weight.

Therefore,

`F_n=(12.3)(9.8)` to 2 sig figs so

`F_n=120` and

f = (.137)(12) to 2 sig figs as well so

f = 16N