posted by devin boutte on .
4. What force is needed to push a 15 N object up a 20° incline at constant speed when the coefficient of friction is 0.30
I will be happy to critique your work.
The applied force (in the direction up the incline) must equal the sum of the friction force, which is
PLUS the component of the weight DOWN the incline, which is 15N sin 20
ok so its 15.53 n
5.13 + 4.23 does not equal 15.53 N