2 Blocks 1 and 2 rest on rough surfaces with coefficient of frictions ¢1 and ¢2 respectively. The blocks are connected by a cable that runs over a smooth pulley and are in equilibrium as shown below with the following values.

W2 = 50N
thetha 1 = 30 degrees
thetha 2= 40 degrees
¢1= 0.3
¢2= 0.25

a. If Block 2 is on the verge of sliding down the plane, what is the minimum weight W1, required for equilibrium?
b. If Block 2 is on the verge of sliding up the plane, what is the minimum weight W1, required for equilibrium
? Do not consider overturning.
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