Find work of an object at constant velocity

AI Thread Summary
When lowering an object at constant velocity, the total work done on the block is zero, as the forces are balanced. The work done by gravity on the block is positive, as gravity acts in the direction of the displacement. The work done by the hand on the block is negative, since the hand applies an upward force while the block moves downward. Conversely, the work done by the block on the hand is also positive, as the block exerts a downward force against the hand's upward force. Understanding these signs is crucial for analyzing work in physics.
lindsaybn10
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I lower an object at constant velocity.
What is the sign of the total work done on the block?
What is the sign of the work done by gravity on the block?
What is the sign of the work done by my hand on the block?
What is the sign of the work done by the block on my hand?


I know that work = Force * distance.

Any help is much appreciated!
 
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lindsaybn10 said:
I lower an object at constant velocity.
What is the sign of the total work done on the block?
What is the sign of the work done by gravity on the block?
What is the sign of the work done by my hand on the block?
What is the sign of the work done by the block on my hand?


I know that work = Force * distance.

Any help is much appreciated!

Welcome to PF! :smile:

Next time use the template provided and show your attempt of solution, please.

What determines the sign of work?

ehild
 

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