Figure 5-56 shows a box of mass m2 = 1.3 kg on a frictionless plane inclined at angle θ = 34°. It is connected by a cord of negligible mass to a box of mass m1 = 2.7 kg on a horizontal frictionless surface. The pulley is frictionless and massless. (a) If the magnitude of the horizontal force F is 2.5 N, what is the tension in the connecting cord? (b) What is the largest value the magnitude of F may have without the connecting cord becoming slack?(adsbygoogle = window.adsbygoogle || []).push({});

so i broke this up into 2 free body diagrams

for the first one i got T+2.5 = 2.7a so T = 2.7a-2.5

for the second one T-7.1 = 1.3a so T=1.3a+7.1

putting them together and solving for a i got a = 6.86m/s^2

when i plugged that back to solve to T i got T = 16.0N

but its ssaying that 16.0 is wrong, did i do anything wrong?

and can i get a hint for part b?

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# Homework Help: Frictionless pully and incline

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