Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Alonzo19 Group Title

M, a solid cylinder (M=2.11 kg, R=0.137 m) pivots on a thin, fixed, frictionless bearing. A string wrapped around the cylinder pulls downward with a force F which equals the weight of a 0.870 kg mass, i.e., F = 8.535 N. A. Calculate the angular acceleration of the cylinder. For A. I got this and it's correct "59.0 rad/s^2" B. If instead of the force F an actual mass m = 0.870 kg is hung from the string, find the angular acceleration of the cylinder. C.How far does m travel downward between 0.670 s and 0.870 s after the motion begins

  • one year ago
  • one year ago

  • This Question is Closed
  1. Alonzo19 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Here is the Image of the figure!

    • one year ago
  2. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    The force is equal to the weight of a hanging mass. This doesnt mean that there is actually a mass hanging off of it, it means there is a constant force applied of 8.142N. Once you see that the problem is simple. You have the equation T=I*alpha alpha is angular acceleration which is what you need so just solve for alpha. alpha=T/I where T is the torque applied and I is the moment of inertia. T = F*r (when torque is perpendicular) T = (8.142N) (0.133m) T= 1.083Nm Now find I, since it is a solid cylinder I=(1/2)Mr^2 I = (1/2) (1.99kg) (0.133m)^2 I = 0.0176 kg*m^2 now recall alpha = T/I alpha = (1.083Nm)/(.0176kg*m^2) ALPHA = 61.5 rad/s^2

    • one year ago
  3. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @Alonzo19

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.