realslow said:Yay! Thank you :)
I just wanted to clarify, gravity + friction make up the net force for the cart going up the ramp because gravity and friction are working in the same direction?
realslow said:Okay! :D
Sorry, I just had one question relating to this one, if you could help me again.
I need to state whether my answer is reasonable.
I said it is reasonable because it is 6.8% of the average net force.. and at first I was thinking 0.068 was also the coefficient of friction, but then I calculated friction divided by average net force. It isn't the coefficient.. is it?
I'm also not sure if I was correct in using the average net force.
realslow said:Sorry, if you could clarify what you mean when you say, "So everything lines up and cancels out nicely."
I'm not too sure.. I don't think the rolling resistance would be high though.
Rolling friction force is the force that opposes the motion of a rolling object on a surface. It is important because it affects the speed and efficiency of the rolling object.
Rolling friction is different from other types of friction, such as static and kinetic friction, because it only occurs when an object is in motion on a surface. It also typically requires less force to overcome compared to other types of friction.
The value of rolling friction force can be calculated using the formula F = μmg, where μ is the coefficient of rolling friction, m is the mass of the object, and g is the acceleration due to gravity.
The value of rolling friction force can be affected by various factors such as the weight and shape of the rolling object, the type and texture of the surface it is rolling on, and the speed at which it is rolling.
The value of rolling friction force can be reduced by using smoother surfaces, such as lubricated surfaces, and by reducing the weight and size of the rolling object. Additionally, using ball bearings or other mechanisms can also help to decrease the rolling friction force.