Recent content by tratata

Thanks a million! This REALLY clarified things for me! I truly appreciate your help! Kind regards, Kate PS Indeed I was on the verge of tearing my hair out :)

Homework Statement Why when I convert kg to Newtons I simply multiply by g. But when I convert lbs I multiply by 4.48?? It makes no sense ! Shouldn't it be 32.2? Thanks, Kate Homework Equations The Attempt at a Solution

It sure would )))))))

Hi tiny-tim! Thanks for your response! If a=F/m and I don't need to convert then I divide 12.2 by 30 I get 0.41 - where lbs gets canceled out and I'm left with ft/s2? Does that seem right? Thanks!

Simon: a=μk*g? ;)

Tiny-tim, but how? ;)) a little more help please or direction to go! I've been struggling with this one half the night

Homework Statement A pick up truck is traveling at 58 km/h on a dry horizontal concrete surface when the driver applies the brakes locking the wheels. (a) How far does the car travel before coming to rest? (b) How long does it take the car to stop after the driver applies the brakes? (c) How...

Homework Statement What is the acceleration when a 30.0 lb force acts on a 12.2 slug mass?Homework Equations a=F/mThe Attempt at a Solution I can't quite figure out the slug thing. I took 12.2 slugs to be 392.5 lb/ft/s2 Then divided 30 by 392.5 lbs got canceled out and I'm left with ft/s2 in...

Thank you so very much tiny-tim! I really appreciate your help with this! It makes sense now when you pointed out the difference in angle!

How do you use the angle of uniform slip to calculate the coefficient of static friction? Is there an equation for this? I cannot find it in the module on friction provided with the course... thanks! I found somewhere that tanθ=μk, but that doesn't really help me, as i am looking for μs...