Solving for force with sliding friction

AI Thread Summary
To solve for the force exerted by the worker on the crate, first apply Newton's First Law, which states that the net force must equal zero for an object moving at constant velocity. The force of friction can be calculated using the coefficient of friction (0.25) multiplied by the normal force, which equals the weight of the crate (mass times gravity). The worker's force must equal the force of friction to maintain constant velocity, so set the worker's force equal to the frictional force. By calculating the weight of the crate and applying the coefficient of friction, the required force can be determined. Understanding these principles is crucial for solving the problem effectively.
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Homework Statement



A factory worker pushes a 30.0 kg crate a distance of 4.5 m along a level floor ata constant velocity by pushing horizontally on it. The coefficient of friction is .25.


I have been trying and i can't figure out how to solve this problem. Every attempt i make is dead end. I am not sure how to solve for the force will using the coefficient of friction.

Any help will be appreciated.
 
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Newton's First Law states that a body at rest or moving in a straight line at a constant speed has no net force acting on it, that is, the sum of the forces (the net force) acting on it must be 0. Start from there, and please show your attempt. I assume the problem is asking you what is the force provided by the worker?
 

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