I assume that if you calculated mgh at the top of the slide, and 1/2mv^2 at the bottom you found that mechanical energy was not conserved in this problem. The difference is the work done by friction. Friction acts opposite the direction of motion, so the angle in the dot product is 180 degrees. The work done by friction is negative; it takes mechanical energy from the seal.map7s said:I tried doing W=Fdcos(x). I tried that after I did a conservation of energy equation mgh=1/2 mv^2 but I didn't know where to go with that.
Kinetic friction is a type of friction that occurs between two surfaces that are in motion relative to each other. It is caused by the microscopic roughness of the surfaces and the intermolecular forces between them.
Kinetic friction can act as a resistance force on the park ride, slowing it down and reducing its speed. This can be especially noticeable on rides with sharp turns or steep inclines where the friction between the ride and the track or wheels is greater.
Kinetic friction occurs when two surfaces are in motion, while static friction occurs when there is no relative motion between the surfaces. The amount of force required to overcome static friction is typically greater than that required to overcome kinetic friction.
Yes, the amount of kinetic friction can be reduced by using materials with smoother surfaces or by adding lubrication between the surfaces. This can help decrease the amount of resistance and improve the speed and smoothness of the ride.
The amount of kinetic friction can be calculated by multiplying the coefficient of kinetic friction (a constant for a specific material or surface) by the normal force (the force perpendicular to the surface). This will give you the amount of force required to overcome the friction and maintain the motion of the ride.