(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Two blocks are connected by a string (through a frictionless massless pully) block 1 is on an inclined plane, while block two is hanging from the other end of the string.

m1 = 20kg, theta =53.1, friction between the block and the inclinde is [itex]\mu[/itex]k =.4

what is m2 such that it must be decended 12m in 3 s after the system is released from rest?

2. Relevant equations

sumF= ma

w=mg

3. The attempt at a solution

block 1 = sumF sub x =Ft-Fuk-Fgcos53.1

"""""""" = sumF sub y = Fn-Fgsin53.1=0

block 2 = sumF= Ft-Fg = ma

assuming Ft sub1 = Ft sub 2, due to the frictionless pully

Fgcos53.1+Fuk=Fg+ma

28kg*a=m*a+Fg ?

is this right so far?

I have no clue where to go from here :S

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# Homework Help: Finding mass of a block tethered to an incined block above

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