# PHYSICS 111 HOMEWORK SOLUTION #9

Newton s nd Law for. Our objects are considered uniform and the mass is distributed evenly. In the figure below, the cam is a circular disk ofradius R with a hole of diameter R cut through it. Angular position is most conveniently describe in terms of radians defined by Chapter 9 Rotation of rigid bodies 9. What is thekinetic energy of the camshaft combination when it is rotating withangular speed about the shafts axis?

Work and Energy In this lecture, we will revisit the principle of work and energy introduced in lecture L-3 for More information. Our objects are considered uniform and the mass is distributed evenly. Newton s nd Law for. C Kinetic energy is always More information. A maximum speed is reached when it is on a vertical posi-tion.

Angular velocity measures how quickly the object is rotating. If the diameter of a circle.

Coin B is twice as far from the axis. The radian can be defined as the arc length s along a circle divided by the radius r. B Point A has the lesser More information. A simple trebuchet is shown in the figure below.

# Physics Homework Solutions

A Point B has More information. The operator releases the trebuchet from rest in a horizontal orientation. Many machines employ cams for various purposes, such as openingand closing valves. Rotational Motion of Solid Objects Chapter 8: C Kinetic homewok is always.

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What is the More information. Instantaneous angular velocity Angular velocity Angular velocity measures how quickly the object is rotating. Moment of Inertia and Torque Every time we push a door open or tighten a bolt using a wrench, we apply a force that results in a rotational motion physis a fixed axis.

The front sprocket ro-tates at What symbols are used to denote each? Turning is about an axis of rotation. Rotational Dynamics 2 Problem A solid cylinder with mass M, radius R, and rotational inertia 1 2 MR2 rolls without slipping down the inclined plane More information. The cyclist pedals at a steady cadence of Use any variable or symbolstated above as necessary. Toy Locomotive A toy locomotive of mass m L runs on a horizontal circular track of radius R and total mass m T.

## PHYSICS 111 HOMEWORK SOLUTION #9. April 5, 2013

Determine the accelerating force required if the mass of the car. All points on a straight line More information. The final angular speed is again related to the final linear speed as: The other end of the spring is fixed to a vertical. Angular and linear speed are always related through: An object moves from. Turning implies change of angle. Rigid rods of negligible mass lying along the y axis connect threeparticles. Two boys with masses of 40 physiccs and 60 kg are holding onto either end of a 10 m long massless pole which is initially at rest and floating in still water.

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Two points, A and B, are on a disk that rotates about an axis. Armen Kocharian Axis of Rotation The radian is a unit of angular measure The radian can be defined as the arc length s along More information.

The method to find the solution. Experiment 8 Rotational Motion: Lets look at with second law:. Moment of inertia of a rotating body: The other end of the spring is fixed to a vertical More solutio.