## A boat’s propeller has a rotational inertia of 4.0 kg · mº. After a constant torque is applied for 12 s, the rad rad prope

Question

A boat’s propeller has a rotational inertia of 4.0 kg · mº. After a constant torque is applied for 12 s, the
propeller’s angular speed changes from a clockwise 6.0 to a counterclockwise 6.0
S
S
What was the torque applied to the propeller?

in progress 0
5 months 2021-08-18T17:11:03+00:00 1 Answers 5 views 0

4.0

Explanation:

τ

​

=

Δt

Iω

f

​

−Iω

i

​

​

=

Δt

I(ω

f

​

−ω

i

​

)

​

=

12s

(4.0kg⋅m

2

)(6

s

​

−(−6.0

s

​

))

​

=4.0

s

2

kg⋅m

2

​

=4.0N⋅m

​

Hint #33 / 3

The answer is 4.0\,\dfrac{\text {kg} \cdot \text m^2}{\text s}4.0

s

kg⋅m

2

​

4, point, 0, start fraction, start text, k, g, end text, dot, start text, m, end text, squared, divided by, start text, s, end text, end fraction.