A small sphere with mass m is attached to a massless rod of length L that is pivoted at the top, forming a simple pendulum. The pendulum is pulled to one side so that the rod is at an angle u from the vertical, and released from rest. (a) In a diagram, show the pendulum just after it is released. Draw vectors representing the forces acting on the small sphere and the acceleration of the sphere. Accuracy counts! At this point, what is the linear acceleration of the sphere? (b) Repeat part (a) for the instant when the pendulum rod is at an angle u>2 from the vertical. (c) Repeat part (a) for the instant when the pendulum rod is vertical. At this point, what is the linear speed of the sphere?

Last Updated on 22nd February 2016 Giancoli: Chapter 5 chapter 5 5.1 Applications of Newton's Laws Involving Friction Using Newton’s Laws: Kinetic friction acts opposite to the direction of velocity, and is approximately proportional to the Friction, Circular normal force between the two surfaces according a constant as shown in the following formula: Motion, Drag Forces = class Static friction acts in a direction parallel to the two surfaces that are touching, even when they are