An electric fan is running on HIGH. After the LOW button is pressed, the angular speed of the fan decreases to 85.9 rad/s in 2.4
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Answer:
total energy is 14.12kj
energy at 85% is 12kJ
Explanation:
Hi there!
The period is given by:
T = Period (sec)
w = angular frequency (rad/sec)
According to the equation for SHM in terms of position:
y(t) = Asin(ωt + φ)
A = Amplitude (m)
ω = angular frequency (rad/sec)
t = time (sec)
φ = phase angle
In this instance, the angular frequency is given as 18π.
Plug this value into the equation for T: