Calculate the tension of the blocks

  • Thread starter Thread starter allora_97
  • Start date Start date
  • Tags Tags
    Blocks Tension
AI Thread Summary
The discussion revolves around calculating the tension Tc in a system of four blocks on a frictionless surface connected by massless strings. The initial attempts at solving the problem yielded tensions of 25N and 35N for Tc, but these were incorrect. Participants emphasize the importance of determining the acceleration of the blocks to find the correct tension. A hint is provided to focus on calculating the acceleration as a crucial step in solving for Tc. The conversation highlights the need for a clear understanding of the forces at play in the system.
allora_97
Messages
13
Reaction score
0

Homework Statement



Four blocks are on a frictionless horizontal
surface. The blocks are connected by massless
strings with tensions Ta, Tb, and Tc.
Calculate the tension Tc.
Answer in units of N.

Homework Equations



F = ma
Fn = mg

The Attempt at a Solution


Tc1 = 25N
Tc2 = 35N
 

Attachments

  • physics4.jpg
    physics4.jpg
    18.6 KB · Views: 872
Physics news on Phys.org
Hi allora_97! :smile:
allora_97 said:
Tc1 = 25N
Tc2 = 35N

No.

Hint: what is the acceleration? :wink:
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
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}...
Back
Top