Acceleration with change in direction

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Homework Help Overview

The problem involves calculating the average acceleration of the tip of a clock's second hand as it moves from the 12 to the 3 position, with a specified radius of 5 cm. The context is centered around kinematics and circular motion.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the calculation of average acceleration and question the accuracy of unit conversions, particularly from centimeters to meters.

Discussion Status

Some participants assert that the textbook's answer is correct, while others express doubt regarding their own calculations and conversions. There is an ongoing examination of the conversion process and its impact on the final result.

Contextual Notes

There is a noted concern about potential errors in unit conversion, specifically the conversion of 5 cm to meters, which may affect the calculations. The original poster questions the reliability of the textbook's answer.

Mavlax
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Homework Statement


Calculate the average acceleration of the tip of the second hand from the moment it hits the 12 to the moment it hits the 3 position. The radius is 5 cm. Its a clock by the way.
I've been at it for over an hour and am beginning to susspect my textbook is wrong.


Homework Equations


a= v2 - v1 / t


The Attempt at a Solution


I got 0.0047 m/s squard.
The textbook says its 4.9 x 10 to the power of negative four [S 45 W]. So 0.00049 m/s squard.
 
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Can you give the detailed explanation?...by the way did you do the conversion right i.e. 5cm=0.05m
 
i solved it and found the text is right ... you haven't done the conversion.
5cm = 0.05m
 
Yes the answer is correct as per the textbook!
 

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