Recent content by blackice552

thanks for the help

How do change the formula for momentum to calculate it with a coefficient of kinetic friction

i think i understand now so intead of dividing by the circumference like i was doing all i have to do is divide by 2 pi

so the radius of 30 cm has nothing to do with it? I thought the circumference would be the round

could u please explain a little more

omega(2) is rad sorry

1. Homework Statement theta(t) = 2t^3 + 5t^2 - 2t + 1 Find the angular velocity in rpm's at t = 2s if the radius of the circular path is 30 cm Basically I want to kno if i did this part of the problem right b/c my professor didn't give us a key for the practice exam 2. Homework...

could someone please clarify th e difference between the 2 and maybe give me an example?

1. Homework Statement : I have 2 problems: 1. We have a stick of length 30cm. The stick has a pivot point in its left end. We have a force 3.3N acting at angle 0.7rads and a distance 16.1cm from the pivot. What is the MAGNITUDE of the force we must apply perpendicular to the stick at a...

so I would divide the mass by 1000 then do what i did?

1. Homework Statement : A body of mass 81.7g is moving in a circular path of radius 0.65m. If we calculate the centrifugal force on it to have a magnitude of 0.35N, what is the period of revolution? (2 decimals, UNITS!)(p = 3.14) 2. Homework Equations : I'm given the following equations...

I have to problems that I'm having trouble with today I just can't seem to get my head around a lot of these physics concept so I'm finally coming here Plz help me. I've tried to do these problems and I just don't know what I'm doing. [b]1.We have two masses hanging from a pulley of...