Posted by josh on Thursday, June 10, 2010 at 2:14pm.
You want the frictional force, not the normal force.
100* cos 30 = 86.6 N
is the frictional force, since it is being pulled slowly and presumably not acclerating. You don't need to use the mass information to get that.
The normal force is
M g - 100N sin 30 = 146 N; you were right about that.
The coefficient of sliding friction is 86.6/146 = 0.59
Related Questions
college physics - A rope is used to pull a 3.57 kg block at constant speed 5.10 ...
physics - A rope is used to pull a 2.54 kg block at constant speed 4.48 m along ...
physics - A 3.24 kg block located on a horizontal frictionless floor is pulled ...
physics - A block of mass M = 6.755 kg is pulled along a horizontal frictionless...
physics - A block weighing 11.05 N rests on a 28 degree incline. (a) Find the ...
Physics help - A 5 kg block is pulled from rest along a horizontal surface by a ...
Physics - A 2 kg block is pulled from rest along a horizontal surface by a rope...
physics - I am trying to study for my exam i have tomorrow and this type of ...
Physic - A 3.5 kg block is pushed along a horizontal floor by a force of ...
Physics - Sally applies a horizontal force of 500 N with a rope to dtag a wooden...
For Further Reading
