In class, I would swing my keys around my head on a 58.5 cm long string. If the string pointed down 11.3o from the horizontal and the keys has a mass of 420. g, what was the angular speed of the keys? select the correct option a) 1.83 rad/s b) 9.16 rad/s c) 4.13 rad/s d) 9.25 rad/s
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.
In class, I would swing my keys around my head on a 58.5 cm long string. If the string pointed down 11.3o from the horizontal and the keys has a mass of 420. g, what was the angular speed of the keys? select the correct option
a) 1.83 rad/s
b) 9.16 rad/s
c) 4.13 rad/s
d) 9.25 rad/s
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