Centripetal force Definition and 562 Threads

A stone has a mass of 3.0*10^-3 kg and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.72. When the tire surface is rotating at 20 m/s, the stone flies out of the tread. The...

Hi. I've been having some difficulty with calculating this equation, mainly because I've forgotten most of the equations over the years, and this is sort of a reverse algebra form of an equation I scarcely remember. (i.e., I'm screwed) Ok, here goes. Assume you have objects, as per...

when a car is cornering on a banked road, what force provides the centripetal force? in my book it says that it is the horizontal component of the normal reaction, and the vertical component of the normal balances the weight. But i thought the normal reaction was equal to the component of the...

QUESTION: the mass of the moon is 7.3x10^22 kg and its orbital speed about the Earth is 1024m/s. The distance between the centers of the Earth and moon is 3.844x10^24 m. a) what is the value of the centripetal force acting on the moon? b) the mass ofthe Earth is 5.98x10^24 kg and the...

If there is a car with a mass of 1200 kg and the radius of the curvature is 25m, and the speed is 43km/h, what is the acceleration? How do I find the acceleration At what speed would the centripetal force equal the force of gravity? ( I got 15.7 m/s but I'm not sure if this is right)...

I have a problem here that looks simple to me, but has been driving me crazy: Basically, it's an object weighing 3.33N at the end of a string of unknown length, which is in turn attached to a spring scale. The object is being spun in a circle with a radius of 1.49m. The person spinning the...

This is a weird question but live with me please. I was completing a math competition (www.comap.com)with my team today and when we finished I started wondering about that "room" airforce pilots and NASA astronauts go into. I can't remember the name of the "room" but it is where they get...

a) A 22 kg child is riding a merry-go-round that is rotating at 40 rpm. What centripetal Force must she exert to stay on if she is 1.25 m from its center? 40 rpm = 4.19 rad/s r = 1.25 m Ac = (4.19 rad/s)^2 * (1.25 m) = 21.95 m/s^2 F = (22 kg) * ( 21.95 m/s^2) = 482.9 N b) What...

challenging physics problems...uniform circular motion, centripetal force here is the setup, we had a lab in class, in which a string was strung through a plastic tube. On on end, rubber stoppers were attached and in this case acted as a mass. On the other end, metal masses were hooked on to...

What is the relationship between centripetal force,mass, radius, and period of motion? The motion is in horizontal loops Is there an equation for this?

Hi guys! I have solved some physics problems and was wondering if anyone would check over my work to reassure me of my answers? That would be great! 1) A pilot having a mass of 75 kg flies a plane in a vertical loop. At the top of the loop, where the plane is completely upside down, the...

Browsing through my physics book... The book defines velocity as the limit(t->0) [Δx/Δt], which of course makes sense. An acceleration can occur in two ways: either the speed (speed= ||v||) changes or the direction of the velocity changes. Centripetal acceleration (||a|| is...