Calculate Gravitational Field Strength

AI Thread Summary
To calculate gravitational field strength, the astronaut drops a hammer from a height of 1.25 meters, taking 3 seconds to reach the ground. The average velocity is determined to be 1.25/3 m/s, but this does not provide the correct gravitational field strength. The correct approach involves using specific velocities, typically initial or final, rather than average velocity. The gravitational field strength can be derived from the acceleration due to gravity, which requires careful application of the relevant equations. Accurate calculations are essential for determining the gravitational field strength in this scenario.
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Homework Statement


Given Radius is 4.76*10^5 m
Astronaut drops a hammer of 0.85kg from a height of 1.25m. It takes 3s to reach the ground
What is the gravitational field strength?

Homework Equations





The Attempt at a Solution


g=a=Δv/t
v=d/t
v=1.25/3

a=1.25/3/3

But that's not the answer
 
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fdajkffk said:

Homework Statement


Given Radius is 4.76*10^5 m
Astronaut drops a hammer of 0.85kg from a height of 1.25m. It takes 3s to reach the ground
What is the gravitational field strength?

Homework Equations





The Attempt at a Solution


g=a=Δv/t
v=d/t
v=1.25/3

a=1.25/3/3

But that's not the answer

That 1.25/3 is the average velocity.

Our formulas make use of a specific velocity, usually initial or final depending on which formula you wish to use.
 

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