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Henry Cavendish's Gravitational Constant Experiment

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Henry Cavendish's Gravitational Constant Experiment

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Questions and Answers

What is the relationship between the period of oscillation of a pendulum and the gravitational acceleration?

Directly proportional

Inversely proportional to the square root (correct)

Inversely proportional

Directly proportional to the square

What is the purpose of using the same pendulum at two locations?

To measure the length of the pendulum

To estimate the variation in gravitational acceleration at two locations (correct)

To measure the gravitational acceleration at one location

To calculate the constant of proportionality, k

What does the constant k describe in a spring system?

The mass of the object hung on the spring

The gravitational acceleration

The distribution of mass about the pivot point

The stiffness of the spring (correct)

What is the proportionality between the stretch of the spring and the gravitational acceleration?

Directly proportional to the magnitude of the mass Signup and view all the answers

What is the accuracy required to achieve a precision of 0.001 mgal?

0.001 ∆ x and x of about 980 cm Signup and view all the answers

What is the purpose of instruments such as the LaCoste and Romberg gravimeter?

To measure changes in the Earth's gravitational acceleration Signup and view all the answers

What is the precision of modern gravimeters?

1 part in 1000 million Signup and view all the answers

What is the relationship between the gravitational acceleration and the stretch of the spring?

The stretch of the spring is directly proportional to the gravitational acceleration Signup and view all the answers

What is the unit of measurement for the precision of modern gravimeters?

Milligal Signup and view all the answers

What is the purpose of the beam Instruments of this type?