Question

A safety device brings the blade of a power mower from an initial angular speed of ω₁ to rest in 5.00 revolutions. What is the final angular velocity of the blade?

Answer 1

The final angular velocity of the blade is -0.4π rad/revolution.

Step-by-step explanation:

To find the final angular velocity of the blade, we can use the equation: Κ = ω2 - ω1 = 0 - π/t.

Given that the blade goes from ω1 = π to ω2 = 0 in 5 revolutions, we can calculate the final angular velocity as follows:

Κ = 0 - (2π)/(5 revolution)

Κ = -0.4π rad/revolution.

Therefore, the final angular velocity of the blade is -0.4π rad/revolution.