Practice: A mass swinging at the end of a pendulum has a speed of 1.32m/s at the bottom of its swing. At the top of its swing, it makes a 9° with the vertical. What is the length of the pendulum?

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Spring Force (Hooke's Law) | 15 mins | 0 completed | Learn |

Intro to Simple Harmonic Motion (Horizontal Springs) | 32 mins | 0 completed | Learn |

Energy in Simple Harmonic Motion | 22 mins | 0 completed | Learn |

Simple Harmonic Motion of Vertical Springs | 20 mins | 0 completed | Learn |

Simple Harmonic Motion of Pendulums | 32 mins | 0 completed | Learn |

Energy in Pendulums | 16 mins | 0 completed | Learn |

Practice: A mass swinging at the end of a pendulum has a speed of 1.32m/s at the bottom of its swing. At the top of its swing, it makes a 9° with the vertical. What is the length of the pendulum?

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Concept #1: Energy in Pendulums

Example #1: Example

Practice #1: Practice

Six pendulums of various masses m are released from various heights h above a tabletop, as shown in the figures below. All the pendulums have the same length and are mounted such that at the vertical position their lowest points are the height of the tabletop and just do not strike the tabletop when released. Assume that the size of each bob is negligible. a) Rank each pendulum on the basis of the maximum kinetic energy it attains after release. b) Rank each pendulum on the basis of its maximum speed. Rank from largest to smallest. To rank items as equivalent, overlap them.

A pendulum has a period of 0.69 s on Earth. What is its period on Mars, where the acceleration of gravity is about 0.37 that on Earth?

A 20 kg child is on a swing that hangs from 3.0-m-long chains.What is her maximum speed if she swings outto a 45° angle?

Rank each pendulum on the basis of the maximum kinetic energy it attains after release. Rank from largest to smallest.

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