The box weighs 400lb and the person can pull with 200 lb of force.

The rope on the right side of the pulley pulls up with the same force as the rope on the left side pulls down. This means that the person will be able to raise the box with the 200lb force they can apply, as the pulley system changes the direction of the force. The maximum weight they can lift using the pulley system would be twice the force they can apply, which is 400lb or 1782N."**In summary, the person will be able to raise the box using the pulley system as it changes the direction of the force. The maximum weight they can lift using this system is 400lb or 1782N, which is double the force they can apply.
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The box weighs 400lb and the person can pull with 200 lb of force. Will this person be able to raise the box? What is the maximum weight he can life using the pulley system? Sorry i couldn't figure out how to start. Appreciate any help, Thanks!
 

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convert 200lb to Newtons: 200lb=91kgx9.80N/kg=891N (200lb)
This is the maximum force that the man can apply via the tension in the rope.

The object he is lifting has a force of gravity of 1782N (double the force he can lift)

The best way to lift it would be at constant speed. F=ma, F=0, therefore Tension=Force of Gravity on object.

**"Passing the rope over the pulley changes the direction of the tension in the rope, but doesn't change it's pulling force.
 

FAQ: The box weighs 400lb and the person can pull with 200 lb of force.

How is the weight of the box determined?

The weight of the box is determined by measuring the force of gravity acting on the box, which is typically measured in pounds or kilograms.

Can the person pull the box if it weighs 400lb?

Yes, the person can pull the box if they are able to exert a force of 200 lb. However, it may be difficult for them to move the box if it is significantly heavier than their pulling force.

How is the person's pulling force measured?

The person's pulling force is typically measured using a dynamometer or a force gauge. This measures the amount of force they are able to exert in pounds or newtons.

What other factors may affect the person's ability to pull the box?

Other factors that may affect the person's ability to pull the box include their physical strength, the surface they are pulling the box on, and the friction between the box and the surface.

How does the weight of the box and the person's pulling force relate to each other?

The weight of the box and the person's pulling force are directly related. If the box weighs more than the person's pulling force, the person will not be able to move the box. If the box weighs less than the person's pulling force, the person will be able to move the box with ease.

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