collegegirl said:Homework Statement
A 200N crate rests on a ramp, the angle is 20 degrees with the horizontal. What is the coefficient of static friction between the crate and ramp surfaces
Homework Equations
T=N/cos theta
The Attempt at a Solution
200/cos25 = 219
I don't know where to go from here. The answer is .47 Please show me a direction to take.!
collegegirl said:Would the three forces be gravity, the weight of the crate on the ramp, and the ramp pushing up on the crate? If so, the only one I have numbers for is gravity??
The coefficient of static friction is a measure of the force required to overcome the static friction between two surfaces in contact with each other.
The coefficient of static friction is determined by dividing the maximum force of static friction by the normal force between the two surfaces.
The coefficient of static friction is affected by the nature of the surfaces in contact, the roughness of the surfaces, and the amount of force applied.
Yes, the coefficient of static friction can change depending on the conditions of the surfaces in contact. For example, if the surfaces become smoother, the coefficient of static friction will decrease.
The coefficient of static friction is important because it helps determine the maximum force that can be applied before an object starts to move on a surface. This is crucial in understanding the stability and movement of objects in various situations.