Question
Asked Oct 23, 2019

A vehicle engine slows down from 3300 rpm to 1100rpm in 2.5s. What is the angular acceleration?

a. -102.5 rad/s2
b. -69.5 rad/s2
c. -92.1 rad/s2
d. -53.3 rad/s2
check_circleExpert Solution
Step 1

Given

Л-3300 грm
3300
грs
60
Я
Л-55 грs
531100 грm
1100
грs
60
S 318.33 грs
4 0s
-2.5s
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Image Transcriptionclose

Л-3300 грm 3300 грs 60 Я Л-55 грs 531100 грm 1100 грs 60 S 318.33 грs 4 0s -2.5s

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Step 2

Angular accele...

о, — о
а
4-4
.о-2л/
2я(5-A)
а-
-4
2x3.14(18.33 -55)
а
2.5-0
2x3.14(-36.66)
а-
2.5
а3-92.1 гad/s?
help_outline

Image Transcriptionclose

о, — о а 4-4 .о-2л/ 2я(5-A) а- -4 2x3.14(18.33 -55) а 2.5-0 2x3.14(-36.66) а- 2.5 а3-92.1 гad/s?

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Science

Physics

Angular Motion