Acceleration of the system and the tension T in the string

AI Thread Summary
The problem involves two masses, m1 and m2, connected by a string on a frictionless surface, with a force F applied to one mass. The acceleration of the system is calculated as a = F/(m1 + m2). For the tension T in the string, it is derived as T = m1a, leading to T = Fm1/(m1 + m2). There is some uncertainty regarding the tension calculation, particularly about the forces acting on m2. The discussion emphasizes the need for clarity in understanding how the forces affect both masses.
blackboy
Messages
61
Reaction score
0

Homework Statement


Two masses m1 and m2 situated on a frictionless, horizontal surface are connected by a light string. A force F is exerted on one of the masses to the right. Determine the acceleration of the system and the tension T in the string.


Homework Equations


F=ma


The Attempt at a Solution


I got a=F/(m1+m2). I think that is right. For the tension part, I got a little bit stuck. I finally got T=m1a because it is just moving m1. So T=Fm1/(m1+m2). Is this right? I don't think it is.
 
Physics news on Phys.org


I think that's right
 


I sounds correct to me, too. I am assuming that m2 is experiencing the force, and m1 is following m2.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top