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28 Mar 2008 17:19:14 IST

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H.C. VERMA pg-115 Q.no. 15,17,18,19(c),24,25,29(b)-solutions?

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H.C. VERMA pg-115 Q.no. 15,17,18,19(c),24,25,29(b)-solutions?

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Bipin Dubey

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28 Mar 2008 17:45:40 IST

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Please post the complete questions and that too one at a time.

VARUN RAJ

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28 Mar 2008 17:51:05 IST

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sum no 15
t-mgcos@=mv^2/r
then u can solve it mathematically

VARUN RAJ

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28 Mar 2008 17:55:56 IST

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see sum no 17
ncos@=mg+-unsin@
nsin@+-uncos@=mv^2/r

VARUN RAJ

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28 Mar 2008 18:05:00 IST

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sum no 26 b
unsin@=mv^2/r
ncos@=mg

Anish Sinha

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29 Mar 2008 02:01:09 IST

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25. if u consider the highest point as a circular arc, then the only force acting on the particle is the downward force mg.

mg=mv^2/r

=> r=v^2/g.........(1)

but, vel of particle at highest point is ucos@

putting this in (1)

r=(ucos@)^2/g

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