Hello The spring force has to overcome the friction force: the friction force = mg*u the spring force =

**k***s**mgu**= ks s =**mgu**/**k**s = 0,14715 m --> answer Regards1 Answers · Science & Mathematics · 07/02/2011

...x - fk)*d =(F - mgcos@ - Nu_

**k**)*d =[F - mgcos@ -**mgu**_**k**(cos@)]*d =[(70.0N) - (1.00kg)(9.80m/s^2)(cos50.0) - (1.00kg)(9.80m/s^2)(0.500...1 Answers · Science & Mathematics · 17/06/2012

...from 0 to 1) (1/√x) [f(x) - P(x)]² dx minimum => ∂I/∂α_ k = 2 ∫(from 0 to 1) (1/√x) [f(x) - P(x)] ∂P/∂α_ k = =2 ∫(from 0...

1 Answers · Science & Mathematics · 13/03/2013

F =

**mgu**= 37*9.8* 0.25 = 90.65 newtons2 Answers · Science & Mathematics · 04/03/2009

... after hitting the brake

**K**(final) = 0 (the car stops)**K**(initial) = 1/2*m*v^2 -**mgu*** x = - 1/2 *m *v^2 ----> m will be canceled out. u = v^2 / (2*g*x...2 Answers · Science & Mathematics · 19/09/2011

... force times displacement. To find the force... F=

**mgu**or. Force equals mass of puck, times gravitational constant ...2 Answers · Science & Mathematics · 19/02/2013

...) - F(friction) = F(applied) -

**mgu**F(applied) =**mgu**= 5.0(9.8)(0.25) = 12.25 N i (b) Considering Conservation of Energy:**K**(initial) + W(applied) - W(friction) =**K**(final),**K**= 0...1 Answers · Science & Mathematics · 03/02/2014

...you will need to recalculate) potential energy U=mgh=176.4J at th bottom

**K**=1/2mv^2, from here v=6.26 m/s vo^2=v^2-2a(x-xo) from here, a= -3.27 m/s F=N.u ma=**mgu**, u=a/g=.33 (coefficient) i am not 100% on the coefficient,everything else ...1 Answers · Science & Mathematics · 06/06/2009

haha i had to add a boost or two to get up the first incline, but that was fun!

2 Answers · Sports · 27/01/2009

Considering I can't even make it up the first hill... it was pretty bad i'm sorry.

3 Answers · Games & Recreation · 22/12/2008