starhayley2299 starhayley2299
  • 24-06-2019
  • Physics
contestada

How long does it take a wheel that is rotating at 33.3 rpm to speed up to 78.0 rpm if it has an angular acceleration of 2.15 rad/s^2?

Respuesta :

Vespertilio Vespertilio
  • 05-07-2019

Answer:

2.17 s

Explanation:

Here, w0 = 33.3 rpm = 33.3 /60 rps

= 2 × pi × 33.3 / 60 rad/ s

= 3.4854 rad / s

w = 78 rpm = 78 / 60 rps

= 2 × pi × 78 / 60 = 8.164 rad / s

a = 2.15 rad/s^2

Use first equation of motion for rotational motion

w = w0 + a t

8.164 - 3.485 = 2.15 × t

t = 2.17 s

Answer Link

Otras preguntas

A sheet of cardboard measures 9 feet by 6 feet. Gina makes the entire sheet of cardboard into a closed box that is a perfect cube. What is the surface area of t
Can you write an expression for the number of miles george travels in h hours, George drives 45 mi/h?
Memorial Day honours American losses douring which war?
how did hitler become chancellor?
how we know that ancient civilizations knew of and were concerned about infectious diseases
Simplify the following expressionx - 4y + 5z - 3x - y + 2z = ?.
____________ is the practice of raising fish and other water-dwelling organisms for food A. Land Redamation B. Aquifier C. desertification  D. aquaculture
identify the greatest common factor or label as prime ** 28a^2-4ab
solve the equation 2(d-6)=3d+5
What contraction rhymes with the opposite of narrow