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24 Aug 2008 19:46:55 IST

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PLEASE ANSwer THIS QUESTION BASED ON KINEMATICS......RATES FOR SURE!!

None

A Cannon was elevated at an angle of 15^o, 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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Karthik M

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24 Aug 2008 20:35:47 IST

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See, theoritical range = $\frac{u^2 sin2\theta}{g}$ = R

Observed range will be R - 100mm.

gauravtargetsiit

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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

rumki chakraborty

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Joined: 10 Oct 2007

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25 Aug 2008 14:13:13 IST

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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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