Calculating Normal Force for Blacksmith's Anvil - Newton's Third Law

AI Thread Summary
To calculate the normal force on a 68.2 kg blacksmith's anvil, the gravitational force must be determined using the equation F = ma, where the acceleration due to gravity is typically 9.8 m/s². The calculation of the normal force involves multiplying the mass of the anvil by the gravitational acceleration, resulting in 9.8 x 68.2. There is a suggestion that the problem may require using 10 m/s² instead of 9.8 m/s², which could affect the outcome. Additionally, clarification on the sign convention for forces (whether up or down is considered positive) is necessary for accurate calculations. Understanding these factors is crucial for correctly determining the normal force.
rmalski
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Homework Statement

[/B]Find the normal force exerted on a 68.2 kg blacksmith's anvil by the level block of wood that is supporting it.

Homework Equations

[/B]f=ma Ff=uFn

The Attempt at a Solution

[/B]I have tried to find all the forces acting on the anvil while using its mass but I am not correct for some reason. I did 9.8x68.2 and that is all i know what to do right now
 
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Do you have a significant figures issue?

Chet
 
3. The Attempt at a Solution
I have tried to find all the forces acting on the anvil while using its mass but I am not correct for some reason. I did 9.8x68.2 and that is all i know what to do right now

That appears to be the right approach.

Did they say to assume g = 10 m/s/s rather than 9.8 m/s/s?

Did they say to assume up or down is positive?
 
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