A disc rotates on itself with an initial angular velocity of 20 rad/s. Due to friction, its rotation movement slows down at a constant rate of 4 rad/s2. How many turns does the disc make before stopping? A.)about 5 turns B.)about 8 tours C.)about 12 turns D.)about 15 turns E.)about 22 laps F.)approximately 32 rpm G.)about 55 rpm
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.
A disc rotates on itself with an initial
A.)about 5 turns
B.)about 8 tours
C.)about 12 turns
D.)about 15 turns
E.)about 22 laps
F.)approximately 32 rpm
G.)about 55 rpm
Step by step
Solved in 2 steps
