How to Calculate Pendulum Length and Speed | Easy Step-by-Step Guide

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Homework Help Overview

The discussion revolves around a physics problem involving a pendulum. The original poster seeks assistance in calculating the length of the pendulum based on its period and determining the speed at the lowest point of its swing given a specific angle of maximum displacement.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the relationship between the pendulum's period and its length, as well as the speed at the bottom of the swing. There are hints regarding energy conservation and height differences, but clarity on how to apply these concepts is questioned.

Discussion Status

Some participants have offered hints related to energy conservation and height differences, while others are attempting to derive speed using a formula. However, there is no explicit consensus on the correct approach or final answer, and multiple interpretations of the problem are being explored.

Contextual Notes

There is a mention of specific values and angles, but the original poster expresses uncertainty about the calculations and the relevance of the height difference provided in the hints.

yosup231
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Please Help!

ok could someone plesae help me with this question

I had to draw a pendulum and the questions asks what is the length of the pendulum if the period is .75 s so i got .142 m then it asks what is the speed of the pendulum at the bottom of its swing if the angle that makes its maximum displacement is 11 degrees? wow do i do that... I have no idea?


PLEASE HELP!
 
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c'mon 11 views no help I am sure someone out there knows it
 
HINT 1: What is the difference in height between the highest and lowest positions of the pendulum.

HINT 2: Energy is conserved. :)
 
difference is .142m - .03m i don't see how it helps
 
is the answer by any chance .16 or .23
 
What are the units of speed? And how did you get those numbers?
 
.23 m/s

(2pi/T)A
(spi/.75)(.142sin11)= .23m/s
 

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