Two blocks each of mass m are fastened to the top of an elevator

Two blocks each of mass m are fastened to the top of an elevator as in the figure. The elevator has an upward acceleration a. The strings have negligible mass. (a) Find the tensions T1 and T2 in the upper and lower strings in terms of m, a, and g. (b) Compare the two tensions and determine which string would break first if a is made sufficiently large. (c) What are the tensions if the cable supporting the elevator breaks?

[@pebabmey]

Thank you so much for this video. Super clear and informative.

[@autumnwilliams6827]

How would you solve this problem if the blocks were two different masses?

[@sean_tristan31]

Wait when you substitute -9.8 to g. Shouldn't it become negative?

[@sritejavijapurapu3038]

since he's already subtracting mg because it's acting downwards, it accounts for the g being negative already

[@ujuuju4311]

did you just assume those masses?

[@yinyinhtwe4307]

univercity chapter7 physics