Q11P - Fundamentals Of Physics

Question

Question: For about 10 years after the French Revolution, the French government attempted to base measures of time on multiples of ten: One week consisted of 10 days, one day consisted of 10 hours, one hour consisted of 100 minutes, and one minute consisted of 100 seconds. What are the ratios of (a) the French decimal week to the standard week and (b) the French decimal second to the standard second?

Step-by-Step Solution

Answer

Answer

 

1. Ratio of French decimal week to the standard week is 1.43.
2. Ratio of French decimal second to standard second is 0.864.

Step 1: Given data

One week consisted of 10 days.

One day consisted of 10 hours.

One hour consisted of 100 minutes.

One minute consisted of 100 seconds.

Step 2: Understanding the decimal time

Decimal time is nothing but the representation of the time of day using decimally related units which refers to the time system used in France.

 

Step 3: (a) Determination of the ratio of French decimal week to the standard week

The ratio of the French decimal week to the standard week is calculated as: 

$$\begin{gathered} \frac{frech decimal week}{standard week}=\frac{10}{7} \\ =1.43 \end{gathered}$$

Thus, the ratio of the French decimal week to the standard week is 1.43.

Step 4: (b) Determination of the ratio of French decimal second to a standard second

The number of seconds in French decimal day is, 

$10\times 100\times 100=100,000 seconds$

So, the duration of 1 second in terms of the day is$\frac{1}{100,000}day$ 

 

The number of seconds in a standard day is, 

 $24\times 60\times 60=86,400 seconds$ 

So, the duration of 1 second in terms of the day is,$\frac{1}{86,400}day$ 

 

The ratio of the French decimal second to a standard second is calculated as: 

 $$\begin{gathered} \frac{Frech decimal seconds}{s\tan dared seconds}=\frac{86,400}{100,000} \\ = 0.864 \end{gathered}$$

 Thus, the ratio of the French decimal second to the standard second is 0.864 .