TENSION: how do you calculate it?

  • Thread starter Thread starter hebden
  • Start date Start date
  • Tags Tags
    Tension
AI Thread Summary
Calculating tension does not rely on a specific formula; instead, it is often treated as an unknown force in the context of Newton's Second Law. The equation T=ma is not typically applicable for determining tension in introductory physics. Tension is influenced by various factors and is usually derived from analyzing the forces acting on an object. Understanding the net force is crucial for accurately calculating tension in different scenarios. Overall, tension requires a contextual approach rather than a one-size-fits-all formula.
hebden
Messages
2
Reaction score
0
is there any specific formula or formulas for calculating tension? is T=ma legit?
 
Physics news on Phys.org
Generally, in introductory physics, the tension is not determined by a general formula. If one needs to determine it, it is often an unknown force contributing to the net-force on an object, which appears on one side of Newton's Second Law. So... no, T=ma is not generally "legit".
 
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