Heat- and flame-resistant insulation is also referred to as A. RHW.
B. THWN.
C. MTW.
D. THHN

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Ответ:

jessicap7pg75

30.06.2021

Physics

We have that the revolutions would it take the blade to come to rest from an initial angular speed w3 that was three times as great

n_2=45rev

From the question we are told

A safety device brings the blade of a power mower from an initial angular speed of w1 to rest in 5.00 revolutions. at the same constant accelerations, how many revolutions would it take the blade to come to rest from an initial angular speed w3 that was three times as great, w3 = 3w1?

Generally the equation for the Revolutions before rest is mathematically given as

$For n_1=5\\\\w_1^2=\w_1^2+2\aplhan_1\\\\\alpha=\frac{-w_1^2}{10}$

For n_2

$w_4^2=w_3^2+2\alphan_2\\\\\frac{w_1^2n_2}{5}=9w_1^2\\\\\n_2=45rev$

Therefore

The revolutions would it take the blade to come to rest from an initial angular speed w3 that was three times as great

n_2=45rev

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Heat- and flame-resistant insulation is also referred to as A. RHW. B. THWN. C. MTW. D. THHN