Please help with a friction problem! (due tomorrow)

[StevieRayT]

Main Question or Discussion Point

Determine the coefficient of friction between a 22kg chair and the floor if it requires 15J to push it 1.8m (We're doing a Kinetic and Potential energy unit)

Answer for mu is .04, but can you help me in getting there, we have a test tomorrow!


Thanks in advance!

 

[zeromodz]

Determine the coefficient of friction between a 22kg chair and the floor if it requires 15J to push it 1.8m (We're doing a Kinetic and Potential energy unit)

Answer for mu is .04, but can you help me in getting there, we have a test tomorrow!


Thanks in advance!

This is not were you post homework questions. To answer your problem though.

F = ukN
uk = F / MG
W = D * F
F = W / D
uk = W / MGD
uk = (15) / (22)(9.8)(1.8)
uk = 0.46