Recent content by Vontox7

The problem is I know doubt the method we used back in high school to solve questions of objects rotating in a circle like a pendulum problem and using energy to find the balls maximum height and so forth because back then we didn't account for rotation kinetic energy why? Maybe I am not...

Okay so just simplifying KE = 1/2m(R^2+0)w^2 =1/2mR^2w^2 = 1/2mR^2(v^2/R^2) = 1/2mv^2 ? Btw thank you very much for help it is greatly appreciated !

Homework Statement Hello, I am a bit confused on when rotational kinetic energy exists and when linear kinetic energy exists. For example when we spin a string with a ball attached to the end it has kinetic energy of 0.5mv^2 of the ball when we were solving for velocity of the ball at certain...

I know when it reaches that certain height it will be at rest, so fnet is zero, so acceleration is zero. but i know at the beginning fnet is fx, fx = ma?

Homework Statement A car is elastically launched up a ramp and we are required to calculate the normal force of the car at certain heights up the ramp. Homework Equations The Attempt at a Solution I am able to calculate the elastic potential energy of the car during launching and...

Thank you for your help and time overall, it is greatly appreciated! Anyway, i am not understanding, so there is no inertial forces acting in an accelerating system? Like the outward pull when you ride on a merry-go-round, and when you suddenly stop or accelerate in a car. Even in my textbook it...

Ok i am confused which of the answers is right. Second, how is there no such thing as centrifugal force, if this was the case then we would not be able to separate the components of blood using a centrifuge. Maybe i am not understanding this right please clarify. Please read this...

Hello i answered that question that way, but of course with more detail and a free body diagram, and my teacher gave me 57% on that question, she says that you would slid up or down, and for my question she said that i am saying that centrifugal force is = to fnsin theta and ffscos theta that is...

Homework Statement What happens if you enter a banked rough ramp with a speed lower or higher than the speed limitHomework Equations The Attempt at a Solution If you enter the ramp with a speed greater than the speed limit the car will spin out of the curve due to the forces contributing to...

I am sorry but i don't understand your formula. yes, i know that initial potential and kinetic energy equal the final but the next line i don't understand what it is nor how it can help.

Hello, I have become very confused after i tried to solve this question. A rope pulls a 2 kg object straight up, accelerating it from rest at 2.2 m/s^2 for 3 seconds. they want the work done by each force acting on it. Ok i found the displacement as 9.9 m up. Then i found out that the...

Homework Statement Mike is standing below a tower. His friend on top of the tower which is 580 m drops a balloon at him. At the instant mike fires a potato from a cannon moving at an initial velocity of 95 m/s. How long does it take for the balloon and potato to collide? Homework...

Homework Statement Mike is standing below a tower. His friend on top of the tower which is 580 m drops a balloon at him. At the instant mike fires a potato from a cannon moving at an initial velocity of 95 m/s. How long does it take for the balloon and potato to collide? Homework...