Friction of rubber box on concrete floor

[anon3005]

Homework Statement

A 10 kg rubber box is resting on a concrete floor. A force of 200 N is then applied to this box in a horizontal direction. What is the magnitude of the friction force on the box?

Homework Equations

This is a question about applying Newton's laws so Fsmax = μs η and η = mg.

The Attempt at a Solution

I have had answers -200 N, 98.1N, and 200N in which they are all incorrect. I have an idea it could be 0 N since the net force would have to be 0 since it is at rest and there is a static friction present but I am not sure.

 

[cnh1995]

Homework Statement

A 10 kg rubber box is resting on a concrete floor. A force of 200 N is then applied to this box in a horizontal direction. What is the magnitude of the friction force on the box?

Homework Equations

This is a question about applying Newton's laws so Fsmax = μs η and η = mg.

The Attempt at a Solution

I have had answers -200 N, 98.1N, and 200N in which they are all incorrect. I have an idea it could be 0 N since the net force would have to be 0 since it is at rest and there is a static friction present but I am not sure.

What is the co-efficient of friction between rubber and concrete? Is that given? If not, I think you should look it up.

 

[anon3005]

What is the co-efficient of friction between rubber and concrete? Is that given? If not, I think you should look it up.

It's 1.00

 

[cnh1995]

It's 1.00

So what's the equation?

 

[James R]

Is the question asking about the friction force before it starts sliding, or after (assuming it slides)?

 

[haruspex]

Is the question asking about the friction force before it starts sliding, or after (assuming it slides)?

Given the coefficient of friction, it is safe to assume it slides.