# Force question on pulling worker

• StephenDoty
In summary, a worker pulls on a rope attached to a 10-kg crate on a rough floor with coefficients of static and kinetic friction of 0.5 and 0.3. The applied force is 40 N and the frictional force exerted by the surface is determined to be 40 N. The maximum possible static friction force is 49 N, which is more than enough to handle the applied force, so the box does not move. The net force is zero and the friction is 40 N.
StephenDoty
A worker pulls horizontally on a rope that is attached to a 10-kg crate resting on a rough
floor. The coefficients of static and kinetic friction are 0.5 and 0.3, respectively. The
worker pulls with a force of 40 N. The frictional force exerted by the surface is...??

the box is moving because fk<fs

If the Fnet is not 50N, the applied force then
Fnet= T - fk
Fnet= 50N - fk

and of cource fk= .3 * 10 * 9.8 = 29.4N

Is this right??

The first thing to figure out is: Does it move?

Yes it does move because fk= umg and fs=umg and since us>uk fk<fs which means that the object moves and accelerates, right??

I don't understand your reasoning. Instead, figure out the maximum force that static friction can deliver given the nature of the surfaces. Compare that maximum value with the applied force.

ok...the fs=49N which is < the 40N push. So the box is not moving. So is the fk= 40N so fnet= 0 = fp - fk?

StephenDoty said:
ok...the fs=49N which is < the 40N push. So the box is not moving.
Good. The maximum possible static friction force is 49 N, which is more than enough to handle the applied force of 40 N. So the box doesn't move.

So is the fk= 40N so fnet= 0 = fp - fk?
Since it doesn't move, fk (kinetic friction) is irrelevant.

But the net force is zero, so what must be the friction?

40N

thank you very much

Perfecto!

## 1. What is "force question on pulling worker"?

"Force question on pulling worker" refers to a hypothetical scenario in which a worker is being pulled against their will to perform a task or work. It is often used as a thought experiment in discussions about labor rights and workplace ethics.

## 2. Is "force question on pulling worker" a real situation that occurs in the workplace?

No, "force question on pulling worker" is not a real situation that occurs in the workplace. It is a hypothetical scenario used for discussions and debates about labor rights and workplace ethics.

## 3. Why is "force question on pulling worker" used as a thought experiment in discussions about labor rights?

"Force question on pulling worker" is used as a thought experiment because it highlights the issue of autonomy and consent in the workplace. It raises questions about the rights and responsibilities of employers and employees in terms of work obligations and personal freedoms.

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While "force question on pulling worker" is not a real-life situation, the concepts it explores can be applied to real-life situations. For example, it can be used to discuss the use of forced labor in certain industries or the ethical implications of mandatory overtime for employees.

## 5. What are some key takeaways from the "force question on pulling worker" thought experiment?

The "force question on pulling worker" thought experiment highlights the importance of respecting autonomy and consent in the workplace. It also raises questions about the power dynamics between employers and employees and the role of labor rights in protecting workers' well-being.

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