Question

You need to move a 105 kg sofa to a different location in the room. It takes a force of 102 N to start it moving. What is the coefficient of static friction between the sofa and the carpet? (use g = to about -10 m/s/s)

Answer 1

Answer:

0.0971

Explanation:

we know that

$f max = kn$

that fmax is maximum of static friction , k is coefficient of friction and n is surface reaction force

so we know that from newtons second law

mg=n

so

kmg = 102

k = 102/mg = 102/(10*105) = 0.0971