You need to apply the total conservation of energy principle. Are you familiar with it?c4iscool said:ok, I get that but how would I find the velocity to get the kinetic energy?
ke = 1/2 M*V^2
or am I still not getting it?
In the absence of non conservative forces other than friction, you should discover that [tex]\Delta K + \Delta U + W_{friction}= 0[/tex]. Now you must apply it.c4iscool said:ummm...no. I'm about to google it tho, but please explain.
Looks right. Even your minus sign is correct. I slipped on mine, sorry, I should have said [tex] \Delta K + \Delta U - W_{friction} = 0[/tex]c4iscool said:I got it. I think it works out to be -1.4J
Frictional force is the force that opposes the motion of an object when it comes into contact with another surface. It is caused by the interaction between the two surfaces and can be affected by factors such as the texture, weight, and speed of the object.
Frictional force is calculated using the formula F = μN, where F is the force of friction, μ is the coefficient of friction, and N is the normal force. The coefficient of friction is a measure of how much friction is present between two surfaces, while the normal force is the force exerted by the surface on the object.
There are three types of frictional force: static friction, kinetic friction, and rolling friction. Static friction is the force that prevents an object from moving when a force is applied to it. Kinetic friction is the force that acts on an object when it is already in motion. Rolling friction is the force that occurs when an object rolls on a surface.
Frictional force can either help or hinder an object's motion. In some cases, friction can be useful, such as when it allows us to walk or drive a car. However, in other cases, it can be a hindrance, causing objects to slow down or come to a stop. Frictional force can also cause wear and tear on surfaces and objects.
There are a few ways to reduce frictional force, such as using lubricants, smoothing surfaces, or using wheels or ball bearings to reduce the area of contact between surfaces. Additionally, reducing the weight or speed of an object can also help to decrease the amount of frictional force present.