What is meant by gravitational field strength?
Gravitational field strength is the force per unit mass due to the gravitational field.
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What is the formula linking gravitational field strength (g), force (F) and mass (m)?
F = force (N)
g = gravitational field strength (m s-2)
m = mass (kg)
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What is the value of g at the Earth's surface?
9.81 N kg-1
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Is gravitational field strength a scalar or vector quantity?
Vector
Gravitational field strength acts in the direction of the gravitational force.
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What is another name for gravitational field strength?
Acceleration due to gravity.
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What is the formula linking gravitational field strength (g), gravitational constant (G), mass (M), and distance (r) for a radial field?
g = gravitational field strength (N kg-1)
G = gravitational constant = 6.67 x 10-11 (N m2 kg-2)
M = mass (kg)
r = distance (m)
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What happens to gravitational field strength as distance increases in a radial field?
As distance increases, gravitational field strength decreases.
g and r are related by an inverse square law.
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