I've got to find things out about these pendulums

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SUMMARY

The discussion revolves around calculating the maximum height a pendulum bob reaches after four swings, starting from an initial height of 0.3000 m and losing 1.00% of its energy due to friction with each swing. The key equations involved include potential energy (PE) and kinetic energy (KE) principles. The initial potential energy is calculated based on the height, and subsequent heights after each swing are determined by accounting for the energy loss. The final height after the fourth swing can be derived from these calculations.

PREREQUISITES
  • Understanding of potential energy (PE) and kinetic energy (KE) concepts
  • Familiarity with energy conservation principles in physics
  • Basic algebra for calculating percentages and heights
  • Knowledge of pendulum motion and energy loss due to friction
NEXT STEPS
  • Calculate the potential energy of the pendulum at different heights using the formula PE = mgh
  • Learn how to apply the concept of energy loss per swing to determine subsequent heights
  • Explore the effects of friction on pendulum motion and energy conservation
  • Investigate similar problems involving energy loss in oscillatory systems
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and energy conservation, as well as educators looking for examples of pendulum motion and energy loss calculations.

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Homework Statement



The pendulum is started swinging from a height of 0.3000 m above its rest position and allowed to swing freely back and forth. If 1.00% of the bob's energy is lost due to friction each swing, to what maximum height will the bob swing at the end of its fourth swing?

Homework Equations



I cannot even begin to think of any

The Attempt at a Solution



h=0.3000m
energy lost=1.00%/swing
max h=?

PEi + KEi = PEf + KEf + HE
 
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thear said:

Homework Statement



The pendulum is started swinging from a height of 0.3000 m above its rest position and allowed to swing freely back and forth. If 1.00% of the bob's energy is lost due to friction each swing, to what maximum height will the bob swing at the end of its fourth swing?

Homework Equations



I cannot even begin to think of any

The Attempt at a Solution



h=0.3000m
energy lost=1.00%/swing
max h=?

PEi + KEi = PEf + KEf + HE

Welcome to the PF.

What is the equation for the PE of the pendulum as a function of height? What is the initial PE? What is the PE after the 1st swing? After the 2nd, after the 3rd, after the 4th? And so what is the height after the 4th swing?

Try talking problems like this through, and you will be able to at least show an attempt at a solution when you post the problems here...
 

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