PPT-Centripetal Force

53 Centripetal Force From Newtons 2 nd Law we know that whenever an object accelerates there must be a net force acting on the object to create the acceleration The net force causing centripetal acceleration is called . Chapter 5. Kinematics of Uniform Circular motion. An object that moves in a circle at constant speed, v, is said to be under uniform circular motion. . The magnitude of velocity remains constant.. The direction of velocity changes continuously.. 2.4.1 Draw a vector diagram to illustrate that the acceleration of a particle moving with constant speed in a circle is directed towards the centre of the circle.. 2.4.2 Apply the expression for centripetal acceleration. . Rounding A Curve. Friction between the tires and the road provides the centripetal force needed to keep a car in the curve. Example. A 1000 kg car rounds a curve on a flat road of radius 50 m at a speed of 14 m/s. A) will the car make the turn on a dry day when the . Equations:. Academic Vocabulary:. Centripetal force. Centripetal acceleration. Circular motion. Tangential velocity. Inverse square law. Gravitational constant. Universal gravitational force. Weightlessness. In circular motion with a constant centripetal force.. Applying Newton’s 2. nd. Law. In this case the only force on the body is the force of gravity and the acceleration of the body is centripetal.. We have already seen the forces acting on a mass moving in a horizontal circle, now let’s see how this differs from a mass moving in a vertical circle.. Draw the forces acting on a mass on a string being spun in a vertical circle at the . Angular Measure, Angular Speed,. and Angular Velocity. Bellwork. . 1. A tube is been placed upon the 1 m-high table and shaped into a three-quarters circle. A golf ball is pushed into the tube at one end at high speed. The ball rolls through the tube and exits at the opposite end. Describe the path of the golf ball as it exits the tube.. This one’s going to be quick. Uniform Circular Motion. Uniform Circular Motion = an object following a circular path AT CONSTANT SPEED.. Why can we not say “at constant velocity”?. Definition: . © 2015 Pearson Education, Inc.. This lecture will help you understand:. Circular Motion . Rotational Inertia. Torque. Center of Mass and Center of Gravity. Centripetal Force. Centrifugal Force. Rotating Reference Frames. Magnetic Forces. Objectives: . FLASHBACK. FLASHBACK: Sketch a stress-strain graph for a malleable materials and label a) the limit of proportionality b) the elastic limit c) the ultimate tensile strength d) the breaking point. Uniform circular motion and Universal Gravitation. Centripetal Acceleration & Force. Centripetal Acceleration & Force. This unit we will investigate the special case of kinematics and dynamics of objects in . Circular Motion Lab Results. Part 1: Radius’ effect on velocity. Mass, centripetal force kept constant. Part 2: Mass’ effect on velocity. Radius, centripetal force kept constant. Part 3: Force’s effect on velocity. in Circular Motion (cont.). © 2015 Pearson Education, Inc.. Centrifugal Force?. If you are a passenger in a car that turns a corner quickly, it is the force of the car door, pushing inward toward the center of the curve, that causes you to turn the corner.. What are the three ways . to . accelerate.. Give an example of something speeding up.. Give an example of something slowing down.. Give an example of something turning.. What is required to make something accelerate?.