What Forces Act on a Driven Pendulum?

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SUMMARY

The net force acting on a driven pendulum is calculated using the equation Fnet = Fd + Fg, where Fd represents the driving force (Fd = mk) and Fg represents the gravitational force (Fg = mg). The restoring force (Fr) is also a critical component, although it was not explicitly mentioned in the problem statement. Understanding the role of each force, including their vector nature, is essential for accurately determining the net force on the pendulum.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Familiarity with force equations, specifically Fd = mk and Fg = mg
  • Knowledge of vector components in physics
  • Concept of restoring forces in oscillatory systems
NEXT STEPS
  • Study the concept of restoring forces in oscillatory motion
  • Learn about vector addition of forces in physics
  • Explore the dynamics of driven pendulums and their applications
  • Investigate the effects of damping on pendulum motion
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and oscillatory motion, as well as educators seeking to clarify concepts related to forces acting on pendulums.

cytochrome
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Homework Statement


What is the net force done on a driven pendulum?

Homework Equations


Fd=mk (driving force)
Fg=mg (Gravitational force)
Fr=? (Do I need to include this?)


The Attempt at a Solution


Fnet = Fd + Fg = mk + mg

I'm not sure if I need to include the restoring force, which was not given in the problem but I know it is there.
 
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cytochrome said:
What is the net force done on a driven pendulum?
Force "done"? Unusual terminology. Does it really say that?

Homework Equations


Fd=mk (driving force)
Why is the driving force proportional to the mass of the pendulum? Or is this some other mass?
Fg=mg (Gravitational force)
Are you using g as a vector here? If not, you need to consider that not all the forces will be collinear.
Fr=? (Do I need to include this?)
Depends what it is. There certainly is another force somewhere, or the pendulum would drop like a stone.
 

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