9) a and b 9 The diameter of a ball is measured using a metre rule and a two set-squares, as illustrated in Figure 2.45. The readings on the rule are 16.8cm and 20.4 cm. Each reading has an uncertainty of ±1 mm. Calculate,for the diameter of the ball:ballACK-set-squarereadingFigure 2.45(a) its actual uncertainty,(b) its percentage uncertainty.readingset-squaremetre ruleSuggest an alternative, but more precise, method by which thediameter could be measured.

Given: Left reading: 16.8 cm Right reading: 20.4 cm Uncertainty in each reading = 1 mm

The diameter of a ball is measured using a metre rule and a two set- squares, as illustrated in Figure 2.45. The readings on the rule are 16.8 cm and 20.4 cm. Each reading has an uncertainty of ±1 mm. Calculate, for the diameter of the ball:

The diameter of a ball is measured using a metre rule and a two set- squares, as illustrated in Figure 2.45. The readings on the rule are 16.8 cm and 20.4 cm. Each reading has an uncertainty of ±1 mm. Calculate, for the diameter of the ball:

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter1: Units And Measurement

Section: Chapter Questions

Problem 83AP: A marathon runner completes a 42.188-km course in 2 h, 30 min, and 12s. There is an uncertainty of...

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9) a and b

9 The diameter of a ball is measured using a metre rule and a two set-
squares, as illustrated in Figure 2.45. The readings on the rule are 16.8
cm and 20.4 cm. Each reading has an uncertainty of ±1 mm. Calculate,
for the diameter of the ball:
ball
ACK-
set-square
reading
Figure 2.45
(a) its actual uncertainty,
(b) its percentage uncertainty.
reading
set-square
metre rule
Suggest an alternative, but more precise, method by which the
diameter could be measured.

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