The maximum number of songs that every iPod is capable of storing varies upon the length of songs, file type, format, and encoding used. Using the iPod to hold photos and videos (when applicable), likewise can reduce the number of songs the iPod can store. However, the capacity of every iPod in gigabytes, along with the Apple estimated number of songs that each can hold, is provided below: iPod Name. Capacity (GB) Estimated Songs.
Friction. Causes of Friction. Friction is a force resisting motion of an object when in contact with another. This resistive force is caused by the surface roughness of the contact area of the materials, molecular attraction or adhesion between materials, and deformations in the materials.
Although this force is the smallest, it still can be a factor when the other causes of friction are low. Types of friction . There are two main types of friction: static and kinetic. Static friction is the amount of resistance to motion when an object is static or not moving. Kinetic friction is the resistance on a moving object. Kinetic friction is further classified as sliding or rolling friction.