Pulley question + extras

[VBAhack]

Regarding the mass on incline, what you have to do is break it into 2 separate problems:

(1) M2 falling and pulling M1 up the incline. This has already been solved and you know the acceleration. From this you can determine the velocity that M1 has at time = T.

(2) With the string broken, there is no force pulling M1 up the incline but it does have a velocity that you can determine from problem 1. Basically, the velocity of M1 at time = T from the 1st problem (i.e. when the string breaks) is the initial condition for problem #2.

Think of it this way. A block of mass M1 has an initial velocity V1 up an incline acted upon by gravity and friction. Find the maximum height that M1 reaches before stopping and sliding back down the incline. V1 comes from the first problem (and is a function of T).

Good luck.