- #1
NemoMnemosyne
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Homework Statement
Suppose the angles on an inclined plane are 60*(left-hand side) and 20* (right-hand side). If the left-hand mass is 2.1 kg, what should the right-hand mass be so that it accelerates downslope at 0.64 m/s/s?
Homework Equations
F=ma
The Attempt at a Solution
a=.64
Ml (left-side) = 2.1kg
Mr (right-side) = ?
θl = 60*
θr = 20*
Ml -> F = Mla -> T - Mlgsinθl = Mla
Mr -> F = Mra -> Mrgsinθr - T = Mra
I understand that since acceleration is the same then Mla + Mra = (Ml + Mr)a
I also know that T = Mla + Mlgsinθl
So I tried to sub in for T -> Mrgsinθr - Mla + Mlgsinθl = Mra but this doesn't make any sense to me. No matter how I look at it I can't seem to isolate Mr by itself. This is causing me considerable frustration.