(adsbygoogle = window.adsbygoogle || []).push({}); Projectile Motion :(

Hey guys I am doing some Coursework based on Projectile Motion. Currently I am stuck :(.

I started off my hypothesis by explaining how GPE will transfer to KE so that I could compare the error that would be created when the real equation is used which is GPE = KE + RKE.

GPE = KE where v is the subject in order to find range BUT,

for GPE = KE + RKE I am completly and utterly stuck.

Please Help:

Here is my current working:

GPE = KE + RKE

mgd = ½mv^2 + ½Iω^2

mgd = ½mv^2 + ½(2/5mv)ω^2

2mgd = mv^2 + 2/5mvω^2

5gd = 5/2v^2 + vω^2

GE = mgh

KE = 1/2 mv^2

RKE = 1/2Iω^2

I know that the Moment of Inertia for a Sphere is 2/5mv which can be substituted in...

Please help, any emails or theory will be appreciated.

Also I would prefer it if u started right from the start rather than just jump in for my sake :D.

Thanks

Apoorva

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# Homework Help: Coursework on Projectile Motion

**Physics Forums | Science Articles, Homework Help, Discussion**