How do you solve compound body problems with three masses and one pulley?

  • Thread starter Thread starter Stradivarius
  • Start date Start date
  • Tags Tags
    Pulley
AI Thread Summary
To solve compound body problems involving three masses and a pulley, it's essential to analyze the forces acting on each mass. In the given scenario, a 4.0 kg mass is replaced by a 6.5 kg mass, with a frictional coefficient of 0.30. The key tasks are to determine the system's acceleration and the tensions T1 and T2 in the ropes. Participants emphasize the importance of showing an initial attempt at solving the problem to receive assistance. Understanding the basic principles of dynamics and friction is crucial for solving these types of problems effectively.
Stradivarius
Messages
1
Reaction score
0
http://www.chegg.com/homework-help/questions-and-answers/consider-situation-shown-figure-40-kg-mass-replaced-65-kg-mass-frictional-coefficient-0301-q1351583

I missed class recently, and I don't understand how to do compound body problems. Any help would be appreciated!
 
Physics news on Phys.org
Stradivarius said:
http://www.chegg.com/homework-help/questions-and-answers/consider-situation-shown-figure-40-kg-mass-replaced-65-kg-mass-frictional-coefficient-0301-q1351583

I missed class recently, and I don't understand how to do compound body problems. Any help would be appreciated!
Hello Stradivarius. Welcome to PF !

The problem given in that link.
attachment.php?attachmentid=52817&stc=1&d=1352518721.gif

Consider the situation shown in the figure but with the 4.0- kg mass replaced by a 6.5- kg mass. The frictional coefficient is 0.30.

1) Find the acceleration of the system.  2) What is the tension T1?  3) What is the tension T2?


Do you have any ideas at all regarding how to solve part 1) ?

(According to the rules of this Forum, you need to show an attempt, before we can help you.)
 

Attachments

  • 38086e06-bc13-4496-99f5-8332cce8823e.gif
    38086e06-bc13-4496-99f5-8332cce8823e.gif
    50.1 KB · Views: 1,032
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Thread 'Egg Drop Challenge! Need ideas for winning designs'

I was thinking using 2 purple mattress samples, and taping them together, I do want other ideas though, the main guidelines are; Must have a volume LESS than 1600 cubic centimeters, and CAN'T exceed 25 cm in ANY direction. Must be LESS than 1 kg. NO parachutes. NO glue or Tape can touch the egg. MUST be able to take egg out in less than 1 minute. Grade A large eggs will be used.
View full post »

Similar threads

Force problem with three masses and two pulleys
Replies
4
Views
2K
How Do You Calculate the Angular Motion of a Pulley System?
Replies
15
Views
2K
Newton's law problem: Pushing 2 stacked blocks on a horizontal table
Replies
13
Views
3K
How do I calculate the acceleration of the C.O.M. of a pulley system?
Replies
8
Views
4K
Direction of friction for three bodies stacked one on top of the other
Replies
13
Views
2K
Three Pulley - two masses system.
Replies
17
Views
3K
Forces help -- 2 masses, a pulley and friction....
Replies
21
Views
4K
2 pulley system with three masses. Find the two outside masses.
Replies
2
Views
6K
Window Washer w/ Bucket-Pulley Apparatus
Replies
18
Views
4K
How Does Friction Affect Pulley Systems on Inclined Planes?
Replies
6
Views
3K

Hot Threads

Recent Insights

Back
Top