Purchase Solution

Angular velocity of a rod released under gravity.

Not what you're looking for?

Ask Custom Question

A pencil, 15.7 cm long, is released from a vertical position with the eraser end resting on a table. The eraser does not slip. Treat the pencil like a uniform rod. What is the angular speed of the pencil when it makes a 30.0 degree angle with the vertical?
3.56 rad/s
7.23 rad/s
1.83 rad/s
6.32 rad/s

Purchase this Solution
Solution Summary

Finding angular velocity of the rod using energy conservation.

Purchase this Solution
Free BrainMass Quizzes
Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

The Moon

Test your knowledge of moon phases and movement.

Basic Physics

This quiz will test your knowledge about basic Physics.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

View More Free Quizzes
Related BrainMass Solutions

  • Angular Velocity: Slender Bar, Stepped Disk and Slender Rods

    of the center of gravity of the rod = r - r*cos(theta) moment of inertia of the rod about the pivoted point I = m*l^2/12 + m*r^2 = (4*2^2/12) + 4*0.5^2 = 2.33 kg.m^2 angular velocity w = ?

  • Mass of Inertia and Angular Acceleration

    At release, what is the acceleration magnitude of point B? 2. A vertical 0.2-meter-long slender bar with a uniform cross section is released from rest. It rotates in a vertical plane under the action of gravity.

  • Rod and mass system: Find velocity and tensions in the rod.

    Since the rod remains straight, the angular velocity w, of M1, must equal the angular velocity w, of M2. F. The force of gravity is a downward force on each mass. Show all existing forces on each mass at the lower position. Step 2.

  • Finding the Period of Vibration

    Mass of the rod M = 3.0 kg mass of the block m = 0.5 kg length of the rod l = 1.25 kg center of gravity of the rod from the end B (lg) = l/2 = 0.625 m In equilibrium, let the rod makes an angle Qo with the horizontal, moment about the end B = 0

  • Mechanics:Acceleration of masses on pulley, rotation of rod

    When a rod is released as given, torque acting due to the gravitational force, which is acting at the CM of the rod.

  • Rotational Motion

    The assembly consists of two 15-lb slender rods and a 20-lb disk. If the spring is unstretched when  = 45° and the assembly is released from rest at this position, determine the angular velocity of rod AB at the instant  = 0°.

  • Angular Momentum

    72719 Conservation of Angular Momentum Problem A uniform rod of mass m_1 and length L rotates in a horizontal plane about a fixed axis through its center and perpendicular to the rod.

  • angular motion

    Determine the new angular velocity Wf after the spheres are released and assume that positions at the end of the horizontal rotating rod is a distance of 2r from the axis of rotation.

  • Rotational Simple Harmonic Oscillation: Rod with two springs

    period of oscillation is given by c.) the kinetic energy of the rod 2 seconds after it is released The equation for the angular displacement and the angular velocity as a function of time for the rotational motion of the rod is given by (angular

  • Angular Speed of System

    The angular speed of rings at the end of a rod at a specific instant is determined. Once the rings leave a rod another angular speed can be determined.

View More Related Solutions