String is wrapped around the outer rim of a solid uniform cylinder that is free to rotate about a frictionless axle through its center. When the string is pulled with a force F tangent to the rim, it gives the cylinder an angular acceleration a. If the cyclinder had half the radius, but everything else was the same, the angular acceleration could be 1. 4a 2. a 3. a/4 4. 2a 5. a/2
Angular speed, acceleration and displacement
Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.
Angular Position
Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.
String is wrapped around the outer rim of a solid uniform cylinder that is free to rotate about a frictionless axle through its center. When the string is pulled with a force F tangent to the rim, it gives the cylinder an
1. 4a
2. a
3. a/4
4. 2a
5. a/2
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