Calculating Acceleration of Connected Blocks on a Wedge

[wing_88]

Homework Statement

http://img94.imageshack.us/img94/8821/phy001.th.jpg
angle = 20
coefficient of kinetic friction between block and surface = 0.2
When the whold system released, what is the "acceleration" of blocks.
all blocks have equal mass

Homework Equations

The Attempt at a Solution

block c will lead the motion

 

[kuruman]

What are your thoughts on the matter? In the past, how have you treated problems involving blocks, strings and hanging masses? Other than reading the problem carefully, where does one always begin with such problems?

 

[tiny-tim]

Hi wing_88!

Either call the two tensions T₁ and T₂, then do some FBD equations, and eliminate T₁ and T₂

or use work done and conservation of energy.