Answer:
2 rad/s²
Explanation:
From the question given above, the following data were obtained:
Mass (m) = 1 Kg
Radius (r) = 0.2 m
Angular speed (w) = 20 rad/s
Time (t) = 10 s
Angular acceleration (a) =?
Angular acceleration is defined as:
Angular acceleration (a) =Angular speed (w) / time
a = w/t
With the above formula, we can obtain the angular acceleration of the sphere as follow:
Angular speed (w) = 20 rad/s
Time (t) = 10 s
Angular acceleration (a) =?
a = w/t
a = 20 / 10
a = 2 rad/s²
Thus, the angular acceleration of the sphere is 2 rad/s²
