Find Friction Force for 3 kg Block on Inclined Plane

  • Thread starter Thread starter jinx007
  • Start date Start date
  • Tags Tags
    Mechanics
Join the discussion
Registration is free. Start your own thread to ask a follow-up.
1 reply · 1K views
jinx007
Messages
60
Reaction score
0
A block of mass 3 kg is on a rough inclined plane at 30 degree to the horizontal. The coefficient of friction is 0.2 and a force of 10 N acts upward parallel to the plane. Find the friction?


The answer to the question is 5N

my work

Normal reaction= 30 cos 30

Using F = u R

(0.2 x 30 cos 30 )= 5.20 N

I am not obtaining the answer, and i don't even know whether the method is correct or not as i have not consider the 10 N. Please need help to attempt the question...!
 
Physics news on Phys.org