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Grade: 11

                        

two blocks are connected by a string . they are released from rest. if the coefficient of friction between m1 and the surface is μ, find the common speed of the blocks at the instant when they have moved a distance L.

3 years ago

Answers : (1)

Adhitya
11 Points
							
W1=um1gl
W2=m2gl 
Therefore, Net work =W2-W1(friction does negative work)
=(m2-m1u)gl 
Now according to W-E Theorem,
 1/2(m1+m2)v^2=(m2-um1)gl
Therefore v=√2(m2-um1)gl/√(m1+m2).
2 years ago
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