## maheshmeghwal9 3 years ago Three identical smooth cylinders each of mass 'm' are kept on a smooth horizontal surface as shown in figure. A horizontal force 'F' is applied on the cylinder A. Line of action of force F passes through mid-point (center) of cylinder A. a.) What is minimum value of F such that all three cylinders move together? b.) What is maximum value of F such that all three cylinders move together?

1. maheshmeghwal9

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2. maheshmeghwal9

3. maheshmeghwal9

Please don't use Energy Work Power concept Because I haven't studied it yet.

4. maheshmeghwal9

This is my request.

5. maheshmeghwal9

6. maheshmeghwal9

We have to solve it by only analysis of forces. :)

7. maheshmeghwal9

Really sorry but I am not getting wt u wanna tell me? i think i must tell u answers a.) mg/sqrt{3} b.) sqrt{3}mg.

8. maheshmeghwal9

o.O

9. maheshmeghwal9

gr8:)

10. maheshmeghwal9

but i must learn wt is torque?

11. experimentX

moment of force http://en.wikipedia.org/wiki/Torque

12. maheshmeghwal9

oh but plz tell me why did u analyzed torque on sphere C?

13. experimentX

this is just newton's law ... conservation of momentum.

14. maheshmeghwal9

oh i see:) thanx:) but plz anyone help me for a.) too.

15. experimentX

I'm trying to see what concept is used here.

16. maheshmeghwal9

thanx:)

17. experimentX

can't seem to concentrate ... let me do this on copy.

18. maheshmeghwal9

np:) sorry i was somewhere else:)

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