An electric drill starts from rest and undergoes uniform angular acceleration for a period of 0.145 s until it turns at a rate of 2.85 ✕ 10^4 revs/min.
(a) what is the drill's angular acceleration (in rad/s^2)?
(b) what is the angle (in radians) through which the drill rotates during this period?

Answer

given,

time period, t = 0.145 s

angular velocity, ω = 2.85 x 10⁴ rev/ min

using rotational motion equation

Since it starts from rest ,initial angular velocity ωo=0

final angular velocity

α = 15,527 rad/s²

b)

again using equation of rotational motion

    θ = 163.23 rad

no link

explanation:

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation: