Recent content by grr_physics

sorry, promise i won't anymore!

thanks! :)

so do i do this: Ep = Ek mgh = 1/2mv^2 gh = 1/2v^2 (9.81)(0.250)=1/2v^2 and keep going til i get the answer?

so do i do this: Ep = Ek mgh = 1/2mv^2 gh = 1/2v^2 (9.81)(0.250)=1/2v^2 and keep going til i get the answer? where do i do trig?

Need help to find the velocity of a pendulum at a distance please! 1. Homework Statement A 3.60 m long pendulum with a 1.25 kg bob is pulled sideways until it is displaced 1.80 m horizontally from its rest position. If the bob is released, calculate the speed of the bob when it is 0.250 m...

How to find the velocity of a pendulum...need help! Homework Statement A 3.60 m long pendulum with a 1.25 kg bob is pulled sideways until it is displaced 1.80 m horizontally from its rest position. If the bob is released, calculate the speed of the bob when it is 0.250 m about it's rest...

i figured out the 18 N in class but I don't remember how but thanks a bunch for the help, even though u say I didn't need the hint, your hint made me think & brought back everything! =)

I don't know the other forces, only the top mechanical energy & bottom mechanical energy

okay i did tried this: Fn= (10.0kg)(cos(36.869...degrees))(9.81) = 78.48...N u=F/Fn =0.22935... is this correct?

okay i did tried this: Fn= (10.0kg)(cos(36.869...degrees))(9.81) = 78.48...N u=F/Fn =0.22935... is this correct?

u= F/ Fn but i don't know what my Fn is?

how do I find the normal force? I just started physics 30 & totally forget everything... :(

oh yeah i also found the angle at the bottom is 36.869... degrees if that helps

oh yeah i also found the angle at the bottom is 36.869... degrees if that helps.

How to find coefficient of friction of object sliding down ramp? Please Help! Homework Statement An 10.0kg object slides down an inclined plane that is 10.0m in length. THe height of the incline is 6.0m and the speed of the object at the bottom is 9.0 m/s. What is the coefficient of friction...