A community for students.
Here's the question you clicked on:
 0 viewing
sjg13e
 one year ago
Mass on a Pulley (involves Newton's 2nd law and friction)
sjg13e
 one year ago
Mass on a Pulley (involves Newton's 2nd law and friction)

This Question is Closed

sjg13e
 one year ago
Best ResponseYou've already chosen the best response.0Question: M1 has a mass of 5.250 kg. It is on a horizontal surface, connected by a massless string to a hook where mass M2 can be increased smoothly. The pulley has a negligible mass and no friction. When M2 = 7.88kg it begins to accelerate downwards at a rate of 1.833 m/s^2. Calculate us (static friction)  uk (kinetic friction) between M1 and the surface.

EmmaTassone
 one year ago
Best ResponseYou've already chosen the best response.1To get the Us try to think the problem when the masses where on rest, therefore the friction equals the tension to keep the object still. On the other hand the tension to put the system in rest will be when the weight of the mass 2 equals the tension. Finally use:\[F=\mu_s.N\] to get static mu.

EmmaTassone
 one year ago
Best ResponseYou've already chosen the best response.1to know the \[\mu_k\] you have to take a similar way but now using that the sum of forces is not equal zero. \[\sum_{0}^{n}F= m.a\] and the aceleration is the same for the two masses because they are linked by a string.
Ask your own question
Sign UpFind more explanations on OpenStudy
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
 Engagement 19 Mad Hatter
 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.