- #1
Inertialforce
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- 2
Homework Statement
Three blocks are placed onto a frictionless horizontal surface. These blocks are side by side and are in contact with each other. Let m1=2m2=5m3. Answer the following exercises.
(Part 1)
a)If a force is applied to m1, then show that
i)Fa = 17/2m3a
ii)F12 = 7/2m3a where F12 is the contact force of mass 1 on mass 2
iii)F23=m3a
Question: Consider the same three blocks as in the question above. If these blocks rest upon a rough floor (μ=0.11), show that if a force is applied to m1, then:
(Part 2)
i)Fa = 17/2 m3(a+μg)
ii)F12 = 7/2 m3(a+μg)
iii)F23 = m3(a+μg)
Homework Equations
Σ Fx = ma
The Attempt at a Solution
All in all both questions (part 1 and part 2) are more or less the same except this question (part 2) includes the force of friction while the other (part 1) does not. I have already solved all the questions for part 1, and where I am having difficulty is, is in getting rid of the mass (m) in "μmg" for this question so that I could get the values as seen above.