Question

You need to move a 105kg sofa to a diffrent room. It takes a force of 102 N to start it moving. What is the coefficient of static friction between sofa and carpet?

Answer 1

can someone help me because i have no idea how to do this and i have finals

Answer 2

0.099

Answer 3

Well, the sofa is exerting 105kg * 9.8 m/s^2 * kg of force, so that will be our normal force. And then you know that the sofa will start moving once the exerted force has passed 102N.
\[F _{s} = \mu * F_{n}\]
So, you can use this equation to solve for \[\mu\]