Constraint Relation-4

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Soumyabrata Mondal ·2013-02-24 18:22:37

rate of increasing of the length of shadow dxdt
given,
dydt=7 m/s
velocity of the shadow = dxdt+dydt

AB=5m, MN=1.5m
From Î”ABP & Î”MNP
PMMN=PAAB
Or,x1.5=x+y5
or, 7x=3y
or, x=37y
diff. both side w.r.t. t
dxdt=37dydt=3m/s
now, velocity of the shadow = dxdt+dydt=7+3=10 m/s

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Akash Anand Good Work Soumya...keep it up
Upvote·0· Reply ·2013-02-27 00:40:45
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Shaswata Roy ·2013-02-23 22:11:16

10m/s

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Akash Anand Good Work :)
Upvote·0· Reply ·2013-02-24 01:03:53
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Dwijaraj Paul Chowdhury ·2013-02-23 22:20:15

Yup 10m/s

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Akash Anand Good Work :)
Upvote·0· Reply ·2013-02-24 01:04:01
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Akash Anand ·2013-02-24 01:05:02

It will be better if any other people (Not these two who answered already) provide the solution.

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Constraint Relation-4

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