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.
Figure 4 Static Friction. The middle image in Figure 4 shows that the force of static friction is equal in magnitude but opposite in direction to the force applied. So, the forces on the object shown are balanced, and the motion of the object does not change.