How Do Pendulum and Planetary Motions Compare and Contrast?

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SUMMARY

The discussion focuses on the comparison between the motions of a pendulum and a planet in circular motion. Both exhibit periodic motion, but while the pendulum swings back and forth, the planet follows a circular path around the sun. The forces acting on them differ significantly; the pendulum is primarily influenced by Earth's gravity, whereas the planet's motion is governed by gravitational forces from the sun.

PREREQUISITES
  • Understanding of basic physics concepts, particularly motion and forces.
  • Familiarity with gravitational forces and their effects on objects.
  • Knowledge of periodic motion and its characteristics.
  • Basic comprehension of circular motion principles.
NEXT STEPS
  • Research the principles of gravitational force and its impact on planetary motion.
  • Study the characteristics of periodic motion in pendulums.
  • Explore the laws of motion as described by Newton, particularly in relation to circular motion.
  • Investigate the mathematical equations governing pendulum motion and planetary orbits.
USEFUL FOR

Students studying physics, educators teaching motion concepts, and anyone interested in understanding the fundamental differences between pendulum and planetary motions.

m.l.
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Homework Statement


The motions of a pendulum and a planet undergoing circular motion are compared
a) describe a similarity in their motions
b)describe a difference in their motion
c) Outline a difference in the forces acting on the pendulum and the planet


Homework Equations





The Attempt at a Solution


a) They both have a displacement of 0?
b)one is circular, one is not?
c)?
I'm looking for a more thourough answer.
 
Last edited:
Physics news on Phys.org
a. They are both moving
b. They are doing different things
c. The pendulum is affected by the Earth's gravity while the planet moves under the influence of the sun.

No, wait. Those are probably wrong.

Maybe you should try first.
 

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