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![[Post New]](/templates/default/images/icon_minipost_new.gif) 24 Aug 2008 19:46:55 IST
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A Cannon was elevated at an angle of 15o, throws a shell with muzzle speed of 196m/s. Due to air resistance the range decreases by 100mm.what is the observed range?
please give me a answer with detalied solution. rates for sure.
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KRITHIKA |
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24 Aug 2008 20:35:47 IST
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See, theoritical range =  = R
Observed range will be R - 100mm.
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Will nip in at times to solve problems :)
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24 Aug 2008 20:35:52 IST
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use the formula
R= u^2sin(2theta) / g
where
u=muzzle velocity of shell
theta= 15degree
g=9.8m/s^2
and then subtract 100mm from it
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range R= {u2 sin(2*theta)}/g
Given data:
2 x theta = 2 x 15 = 30 degree; u = 196m/s, g = 9.8 m/s2
substituting,
R = {(196)2} x (Sin30)/9.8
= 1960 m
Observed range = R - 100mm
= 1960 - 0.1
= 1959.1m ........................ ANSWER
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