Recent content by Shad94

Thanks...

So, the net force is N-mg...where N(upward force) is equal to 3 times of mg(weight)...?

But, isn't the magnitude of the force is equal to 3 times of the weight...where w is equal to mg ( base on the question)

Homework Statement A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to 3.0 times her weight as she goes through the dip.If r=25m, how fast is the roller coaster...

Can you give me the answer...because i still don't understand it..

Can you give me the answer...because i still don't understand it..

The question is: A ball of a mass 4kg is attached to the end of a 1.2m long string and whirled around in a circle that describes a vertical plane..what is the minimum speed that the ball can be moving at and still maintain a circular path? i try solve it by use T+mg=mv*2/r.But i can't find...