Question

Lagrangian Mechanics: A pendulum of mass m and length l hangs from the rear view mirror...

Lagrangian Mechanics:

A pendulum of mass m and length l hangs from the rear view mirror in a car traveling with horizontal acceleration a. Assume the car starts from rest at time t=0. (Solve using Lagrangian Mechanics.)

a) Draw a diagram of the situation. Write out the x and y coordinates of the position of the pendulum in the in terms of the angle of the pendulum,  Φ, and the time t.

b) Write out T, U, and L in terms of the angle of the pendulum, Φ, and the time t.

c) Solve the E-L equation for the equation of motion for the pendulum bob. Find the equilibrium angle for the pendulum and show that it is equal to: Φo = tan-1(a/g)

0 0
Add a comment Improve this question Transcribed image text
Know the answer?
Add Answer to:
Lagrangian Mechanics: A pendulum of mass m and length l hangs from the rear view mirror...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • A simple pendulum with mass m = 2.3 kg and length L = 2.62 m hangs...

    A simple pendulum with mass m = 2.3 kg and length L = 2.62 m hangs from the ceiling. It is pulled back to an small angle of θ = 9.2° from the vertical and released at t = 0. 1) What is the period of oscillation? 2) What is the magnitude of the force on the pendulum bob perpendicular to the string at t=0? 3) What is the maximum speed of the pendulum? 4) What is the angular displacement...

  • A simple pendulum with mass m = 2.1 kg and length L = 2.79 m hangs...

    A simple pendulum with mass m = 2.1 kg and length L = 2.79 m hangs from the ceiling. It is pulled back to a small angle of θ = 11.5° from the vertical and released at t = 0. 1) What is the period of oscillation? 2) What is the magnitude of the force on the pendulum bob perpendicular to the string at t=0? 3) What is the maximum speed of the pendulum? 4) What is the angular displacement...

  • A simple pendulum with mass m = 2.1 kg and length L = 2.3 m hangs...

    A simple pendulum with mass m = 2.1 kg and length L = 2.3 m hangs from the ceiling. It is pulled back to an small angle of θ = 11.9° from the vertical and released at t = 0. 1)What is the period of oscillation? 2)What is the magnitude of the force on the pendulum bob perpendicular to the string at t=0? 3)What is the maximum speed of the pendulum? 5)What is the magnitude of the tangential acceleration as...

  • A simple pendulum with mass m = 1.8 kg and length L = 2.77 m hangs...

    A simple pendulum with mass m = 1.8 kg and length L = 2.77 m hangs from the ceiling. It is pulled back to an small angle of θ = 9° from the vertical and released at t = 0. 1) What is the period of oscillation? Answer= 3.34 s 2) What is the magnitude of the force on the pendulum bob perpendicular to the string at t=0? Answer= 2.76 N 3) What is the maximum speed of the pendulum?...

  • A pendulum consists of a uniform rod of total mass m and length L that can...

    A pendulum consists of a uniform rod of total mass m and length L that can pivot freely around one of its ends. The moment of inertia of such a rod around the pivot point is 1/3mL^2 The torque around the pivot point of the pendulum due to gravity is 1/2mgLsinθ, where θ is the angle the rod makes with the vertical and g is the acceleration due to gravity. a) Write down the equation of motion for the angle...

  • A) Write the Lagrangian for a simple pendulum consisting of a point mass m suspended at...

    A) Write the Lagrangian for a simple pendulum consisting of a point mass m suspended at the end of a massless string of length l. Derive the equation of motion from the Euler-Lagrange equation, and solve for the motion in the small angle approximation. B) Assume the massless string can stretch with a restoring force F = -k (r-r0), where r0 is the unstretched length. Write the new Lagrangian and find the equations of motion. C) Can you re-write the...

  • A simple pendulum with mass m = 1.7 kg and length L = 2.47 m hangs...

    A simple pendulum with mass m = 1.7 kg and length L = 2.47 m hangs from the ceiling. It is pulled back to an small angle of = 11.8° from the vertical and released at t = 0. 1) What is the period of oscillation? s Submit Help You currently have 10 submissions for this question. Only 15 submission are allowed. You can make 5 more submissions for this question. Your sih missions: Computed value: 2.9 Submitted: Thursday, November...

  • A simple pendulum with mass m = 2.1 kg and length L = 2.3 m hangs...

    A simple pendulum with mass m = 2.1 kg and length L = 2.3 m hangs from the ceiling. It is pulled back to an small angle of θ = 11.9° from the vertical and released at t = 0. 4)What is the angular displacement at t = 3.56 s? (give the answer as a negative angle if the angle is to the left of the vertical) 6)What is the magnitude of the radial acceleration as the pendulum passes through...

  • A plane pendulum of length L and mass m is suspended from a block of mass...

    A plane pendulum of length L and mass m is suspended from a block of mass M. The block moves without friction and is constrained to move horizontally only (i.e. along the x axis). You may assume all motion is confined to the xy plane. At t = 0, both masses are at rest, the block is at   , and the pendulum has angular deflection   with respect to the y axis. a) Using and as generalized coordinates, find the Lagrangian...

  • Prob. 7.3: A simple pendulum (mass M and length L) is suspended from a cart (mass...

    Prob. 7.3: A simple pendulum (mass M and length L) is suspended from a cart (mass m) that canoscillate on the end of a spring of spring constant k, as shown in the figure at right. (a) Write the Lagrangian in terms of the generalized coordinates x and ?, where x is the extension of the spring from its equilibrium length and ? is the angle of the pendulum from the vertical. Find the two Lagrange equations. (b) Simplify the...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT