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Suppose you have a pendulum clock which keeps correct time on Earth(acceleration due to gravity = 1.6 m/s2). For ever hour interval (on Earth) the Moon clock:


A) (9.8/1.6)h

B) 1 h

C) the square root of 9.8/1.6 h

D) (1.6/9.8)h

E) the square root of 1.6/9.8 h

Answer :

skyluke89

The moon clock is A) (9.8/1.6)h compared to 1 hour on Earth

Explanation:

The period of a simple pendulum is given by the equation

[tex]T=2\pi \sqrt{\frac{L}{g}}[/tex]

where

L is the length of the pendulum

g is the acceleration of gravity

In this problem, we want to compare the period of the pendulum on Earth with its period on the Moon. The period of the pendulum on Earth is

[tex]T_e=2\pi \sqrt{\frac{L}{g_e}}[/tex]

where

[tex]g_e = 9.8 m/s^2[/tex] is the acceleration of gravity on Earth

The period of the pendulum on the Moon is

[tex]T_m=2\pi \sqrt{\frac{L}{g_m}}[/tex]

where

[tex]g_m = 1.6 m/s^2[/tex] is the acceleration of gravity on the Moon

Calculating the ratio of the period on the Moon to the period on the Earth, we find

[tex]\frac{T_m}{T_e}=\frac{g_e}{g_m}=\frac{9.8}{1.6}[/tex]

Therefore, for every hour interval on Earth, the Moon clock will display a time of

A) (9.8/1.6)h

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