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A block weighing 10 N tavels down a smoo...

A block weighing 10 N tavels down a smooth curved track AB joined to a rough horizontal surface. The rough surface has a friction coeficient of 0.20 with the block. If the block starts slipping on the track from a point 1.0 m above the horizontal surace, how far will it move on the rough surface?

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`mg=10N, mu=0.2, H=1m,u=v=0`
Change in P.E =work done to increse K.E.
`rarr W=mgh=10xx1=10J`
Again on the horizontal suface the frictioN/Al force
`F=muR=mumg=10xx1=10J`
So, the K.e. is used to overcome friction.
`rarr S=W/F=(10J)/(2N)=5m`
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HC VERMA-WORK AND ENERGY-Exercises
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  2. Figure shows a particle slideing on a frictionles track which terminat...

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  3. A block weighing 10 N tavels down a smooth curved track AB joined to a...

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  4. A uniform chain of mass m and length l overhangs a table with its two ...

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  5. A uniform chain of length L and mass M overhangs a horizontal table wi...

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  6. A block f mas 1 kg is placed at the point A of a rough track shown in ...

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  7. A block of mass 5.0 kg is suspended from the end of a vertical spring ...

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  8. A block of mass 250g is kept on a vertical spring of spring constant 1...

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  9. Figure shows a spring fixed at the bottom end of an incline of inclina...

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  10. A block of mass m moving at a speed 'v' compresses a spring through a ...

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  11. Consider the situation shown in figure. Initially the spring is unstre...

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  12. A block of mass m is attached to two unstretched springs of spring con...

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  13. A block of mass m sliding n a smooth horizontal surface with velocity...

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  14. A small block of mass 100 g is pressed against a horizontal spring fix...

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  15. A small hevy block is attached to the lower4 end of a light rod of len...

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  16. Figure shows two block A and B, each having a mass of 320 g connected ...

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  17. one end of a spring of natural length h and spring constant k is fixed...

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  18. Figure shows a light rod of length l rigidly attached to a small heavy...

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  19. The bob of a pendulum at rest is given a sharp hit to impart a horizon...

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  20. A simple pendulum consists of a 50 cm long string connected to a 100 g...

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