Two Masses,M₁ and M₂ Hang Over a Frictionless Pulley by Means

question 70

Multiple Choice

Two masses,M₁ and M₂ hang over a frictionless pulley by means of a massless string.They are perfectly balanced when a flea of mass m is standing on M₂.When the flea hops from one mass to the other,the system acquires an acceleration,a.What is the value of a in terms of the three masses?

• A)a=g(m/(M₁+M₂))
• B)a=g(m/2M₁)
• C)a=g(m/M₁)
• D)a=g(m/M₂)

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