Re: finding acceleration when given certain variables...
- From: Timo Nieminen <uqtniemi@xxxxxxxxxxxxxxxxx>
- Date: Sun, 18 Dec 2005 09:36:26 +1000
On Sun, 17 Dec 2005 lancelotti13@xxxxxxxxx wrote:
youre given...
Vfinal = O Vinitial = 7.6 m/s kinetic friction = .1 equilibrium in the Y axis
how are you supposed to find acceleration with those given variables. No matter how many equations i plug in and substitute i always end up with two variables...
Ff = Fs x Fn Ff = Fs x mg, m = F/a Ff = Fs x F(g)/a, a = -Vo/t Ff = Fs x F(g) x t/-Vo
Weight = mg Normal force = N = weight = mg Friction force = f = 0.1 N = 0.1 mg
F = ma 0.1 mg = ma 0.1 g = a
You know g, and the unknown mass mas automagically disappeared. Presumably you need to find either the time or distance required to stop next.
-- Timo .
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