Podcast
Questions and Answers
What is the relationship between the equatorial radius and the polar radius of the Earth?
What is the relationship between the equatorial radius and the polar radius of the Earth?
- The equatorial radius is equal to the polar radius
- The equatorial radius is about 21 km longer than the polar radius (correct)
- The equatorial radius is about 42 km longer than the polar radius
- The equatorial radius is about 21 km shorter than the polar radius
What happens to the weight of a body as it is taken from the equator to the pole?
What happens to the weight of a body as it is taken from the equator to the pole?
- It increases (correct)
- It decreases
- It becomes zero
- It remains the same
At which latitude is the force of gravity least?
At which latitude is the force of gravity least?
- At 60° latitude
- At the equator (correct)
- At the poles
- At 45° latitude
What is the relationship between the acceleration due to gravity and the height above the Earth's surface?
What is the relationship between the acceleration due to gravity and the height above the Earth's surface?
What is the value of g at infinite distance from the Earth?
What is the value of g at infinite distance from the Earth?
What is the acceleration due to gravity at a depth of 100 km below the Earth's surface, assuming the Earth is a sphere of uniform density?
What is the acceleration due to gravity at a depth of 100 km below the Earth's surface, assuming the Earth is a sphere of uniform density?
At what depth would the acceleration due to gravity be 1/n times the value at the surface?
At what depth would the acceleration due to gravity be 1/n times the value at the surface?
What is the reason for the variation in the acceleration due to gravity with latitude?
What is the reason for the variation in the acceleration due to gravity with latitude?
What is the effect of the Earth's rotation on the weight of a body on its surface?
What is the effect of the Earth's rotation on the weight of a body on its surface?
What is the assumption made in the calculation of the acceleration due to gravity at a certain depth?
What is the assumption made in the calculation of the acceleration due to gravity at a certain depth?
What is the acceleration due to gravity at a height h above the surface of the Earth, if g is the acceleration due to gravity at the surface of the Earth?
What is the acceleration due to gravity at a height h above the surface of the Earth, if g is the acceleration due to gravity at the surface of the Earth?
What is the fractional decrease in the acceleration due to gravity at a height h above the surface of the Earth?
What is the fractional decrease in the acceleration due to gravity at a height h above the surface of the Earth?
If the radius of the Earth is R, what is the height at which the acceleration due to gravity becomes 1% of its value at the surface of the Earth?
If the radius of the Earth is R, what is the height at which the acceleration due to gravity becomes 1% of its value at the surface of the Earth?
What is the weight of an object at a height h above the surface of the Earth, if W is its weight at the surface of the Earth?
What is the weight of an object at a height h above the surface of the Earth, if W is its weight at the surface of the Earth?
What is the acceleration due to gravity at a distance 2R from the surface of the Earth, if g is the acceleration due to gravity at the surface of the Earth?
What is the acceleration due to gravity at a distance 2R from the surface of the Earth, if g is the acceleration due to gravity at the surface of the Earth?
What is the effect of the Earth's rotation on the gravitational force at the equator?
What is the effect of the Earth's rotation on the gravitational force at the equator?
What is the relationship between the gravitational force at the poles and the equator?
What is the relationship between the gravitational force at the poles and the equator?
What is the apparent weight of an object at the equator compared to its weight at the poles?
What is the apparent weight of an object at the equator compared to its weight at the poles?
What is the expression for g' at a height h above the Earth's surface?
What is the expression for g' at a height h above the Earth's surface?
What is the gravitational force at a height h above the Earth's surface compared to its value at the surface?
What is the gravitational force at a height h above the Earth's surface compared to its value at the surface?
At which latitude is the centrifugal force maximum?
At which latitude is the centrifugal force maximum?
What is the expression for the apparent weight of a body of mass m at latitude λ?
What is the expression for the apparent weight of a body of mass m at latitude λ?
What is the value of g at the poles?
What is the value of g at the poles?
By how much does the weight of a body increase when moved from the equator to the poles?
By how much does the weight of a body increase when moved from the equator to the poles?
What is the expression for the acceleration due to gravity at a latitude λ?
What is the expression for the acceleration due to gravity at a latitude λ?
What is the rate of decrease in acceleration due to gravity with height?
What is the rate of decrease in acceleration due to gravity with height?
At what height does the acceleration due to gravity become 1/9 of its value at the surface of the Earth?
At what height does the acceleration due to gravity become 1/9 of its value at the surface of the Earth?
What is the fractional decrease in acceleration due to gravity at a height h?
What is the fractional decrease in acceleration due to gravity at a height h?
If the acceleration due to gravity at the surface of the Earth is g, what is the acceleration due to gravity at a distance R from the center of the Earth?
If the acceleration due to gravity at the surface of the Earth is g, what is the acceleration due to gravity at a distance R from the center of the Earth?
What is the percentage decrease in acceleration due to gravity at a height h?
What is the percentage decrease in acceleration due to gravity at a height h?
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