physics

The length of a simple pendulum is 0.82 m and the mass of the particle (the "bob") at the end of the cable is 0.69 kg. The pendulum is pulled away from its equilibrium position by an angle of 6.7 ° and released from rest. Assume that friction can be neglected and that the resulting oscillatory motion is simple harmonic motion. (a) What is the angular frequency of the motion? (b) Using the position of the bob at its lowest point as the reference level, determine the total mechanical energy of the pendulum as it swings back and forth. (c) What is the bob's speed as it passes through the lowest point of the swing?



I will be happy to critique your thinking or work on this. Angular freq comes as a standard formula, and the other items for energy concepts (PEmax= KEmax)

i know for part a the answer is 3.547
rad/s but i don't know how to do part b & c

please someone tell me how to do part b & c i know how to do part a only

From geometry, figure how high from the base is the bob when it starts. Its potential energy is mgh where h is the vertical height. At thebottom, the KE has to equal that starting energy.
1/2 mv^=mgh
you can calculate the velocity.

but how do you do part b i still don't get it
thanks for the help

  1. 👍 0
  2. 👎 0
  3. 👁 437

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A particle of mass m = 3.04kg is suspended from a fixed point by a light inextensible string of length = 1.11m. You are required to determine the relationship between the period of swing and the length of the pendulum. For small

    asked by Anonymous on April 6, 2012
  2. physics

    The length of a simple pendulum is 0.79m and the mass of the particle at the end of the cable is 0.24 kg. The pendulum is pulled away from its equilibrium position by an angle of 8.5 degrees and released from rest. Assume that

    asked by David on December 12, 2010
  3. PHYsics !!

    a) What do you understand by Simple Harmonic Motion? b) A simple harmonic motions is characterized by the equation x = (10 cm) sin (0.1t + ) where, x is in cm and t is in seconds Determine the i. amplitude and angular

    asked by kent on August 27, 2013
  4. physics

    A pendulum is constructed from a thin, rigid, and uniform rod with a small sphere attached to the end opposite the pivot. This arrangement is a good approximation to a simple pendulum (period = 5.97 s), because the mass of the

    asked by Dawb on November 17, 2010
  5. physics

    A simple pendulum consists of a ball of mass 5.39 kg hanging from a uniform string of mass 0.0789 g and length L. The period of oscilla- tion for the pendulum is 2.51 s. Determine the speed of a transverse wave in the string when

    asked by ryan on June 20, 2011
  6. Physics

    I got part a but I'm having trouble figuring out b... I know the formula should be something like: T=2pi/omega and omega=sqrt(k/m) but how am I supposed to find T when I don't know k or m?? A pendulum has a period of 2.4 s. a)

    asked by Anonymous on December 4, 2010
  7. Physics

    The length of a simple pendulum is 0.58 m, the pendulum bob has a mass of 285 g, and it is released at an angle of 16 degrees to the vertical. With what frequency does it oscillate?

    asked by Jessica on December 9, 2010
  8. Phyiscs help 3

    The height of a tower is measured by attaching a simple pendulum to its ceiling, whose length is barely enough to stay off the floor. The pendulum is let go from a small angle, and takes 13 s to return to the same location it

    asked by kelsey on November 9, 2008
  9. Physics

    A pendulum and a mass spring system are both undergoing simple harmonic motion on Earth (use g = 10 N/kg). It is observed that every time the pendulum goes back and forth, the spring has gone up and down 12 times. If the pendulum

    asked by Anthony on January 20, 2013
  10. physics

    A pendulum and a mass spring system are both undergoing simple harmonic motion on Earth (use g = 10 N/kg). It is observed that every time the pendulum goes back and forth, the spring has gone up and down 14 times. If the pendulum

    asked by sunny on December 31, 2012
  11. Physics

    A pendulum consists of a tiny bob of mass M and a uniform cord of mass m and length L. A) determine a formula for the period B) what would be the fraction error if one used the formula for a simple pendulum.

    asked by (Simple) on April 22, 2008

More Similar Questions