GIVING OUT MEDALS N BECOMING A FAN:))))
A student pulls horizontally on a 12 kg box, which then moves horizontally with an acceleration of 0.2 m/s2. If the student uses a force of 15 N, what is the coefficient of kinetic friction of the floor?

Question

GIVING OUT MEDALS N BECOMING A FAN:))))
A student pulls horizontally on a 12 kg box, which then moves horizontally with an acceleration of 0.2 m/s2. If the student uses a force of 15 N, what is the coefficient of kinetic friction of the floor?

anonymous · Answer

Do u want the answer only or with the working?

surry99 · Answer

draw a FBD of the box to start

anonymous · Answer

The answer is 3/28 and here's hhiw to do it:

anonymous · Answer

Force-friction=mass * acceleration. Plug in the given values to find friction

anonymous · Answer

Find reaction force by 12g

anonymous · Answer

Then coefficient = f/r