A five pulley system with efficiency 80% is used to lift a 1000N load through a vertical height of 20m. then, calculate MA, effort, input work and output work​

50.23 i believe is correct but don't quote me on that.

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.