With two blocks hanging from a pulley at opposite ends connected by a block in the middle. What is the tension between the left most block and the middle block?

Explanation:

Tension on the pulley are equal, since they are connected by the same string

So analysing each block

Using Newton law

ΣF = ma

Two forces are acting on the block, the weight and the tension

T-W=ma. Upward

W of the object is given as my

W=mg

T-mg=ma

T=ma+mg

T=m(a+g)

So, this is the tension on the block

gans

explanation:

vestigial organs (like your appendix) are organs that no longer serve a purpose.

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )