IIT JEE , AIEEE Forum - Physics , Mechanics

rajat.khanduja

Look at the figure below ( download it if not clear). The blocks A, B & C of mass 'm' each have accelerations a₁ , a₂ & a₃ . F₁ & F₂ are external forces of magnitudes 2mg and mg respectively. Then,

a) a₁ = a₂ = a₃

b) a₁ > a₂, a₂ = a₃
c) a₁ > a₃ > a₂On first look, this appears to be a question for beginners but here's an advise, don't be too, confident.

Well those who got (b) as the answer, you need to check again and so do those who got answer as (a).

So, the answer is (c).

How?????/
On first look it appears that all these systems are subjected to the same forces and hence the accelerations should be the same. Well, I'd suggest that you make your equations and check again.

Surprised. Well we must no forget that "acceleration depends on FORCE AND MASS"

Hope you find it intersting

Ask & Discuss Questions with Community & Experts