• Velocity: if constant speed (magnitude), but changes direction – acceleration. • And if there is acceleration, there is a net force (Newton’s First Law!) • If motion in circle at const speed, force towards center. • Can calculate this force in terms of v and r r v t v v ∆ = ∆ Centripetal (center seeking) acceleration a c = v2 / r

Deriving formula for centripetal acceleration in terms of angular velocity. using linear speed formula. If you're seeing this message, it means we're having trouble loading external resources on our website. centripetal force. The centripetal force is the force of tension. T Centripetal force F c = T The centripetal force is the force or combination of forces that point toward the center of the circle. Centripetal force F c = T What if the string breaks? Which way will the yo-yo go? Centripetal force Centripetal force It flies off in a straight line

Centripetal acceleration If you know a body is in uniform circular motion, you know what its acceleration must be. If a body of mass is traveling with speed in a circle of radius , what is the magnitude of its centripetal acceleration? ANSWER: Hint 2. Determine the force causing acceleration Feb 14, 2010 · The star with mass m_1 has a centripetal acceleration of magnitude a_1. Note that you do not need to understand universal gravitation to solve this problem. Find a_2, the magnitude of the centripetal acceleration of the star with mass m_2. Express the acceleration in terms of quantities given in the problem introduction.

Today Centripetal Acceleration Acceleration that pulls toward the center of a curve. Newtonian Gravity An OK approximation for how gravity works. Today, we’re going to start applying these to things moving around a curve and talk about the forces that govern that motion. Q. A bicyclist is riding at a tangential speed of 13.2 m/s around a circular track.The magnitude of the centripetal force is 377 N, and the combined mass of the bicycle and rider is 86.5 kg. Expressing centripetal acceleration vector in polar components, where is a vector from the centre of the circle to the particle with magnitude equal to this distance, and considering the orientation of the acceleration towards the center, yields