Force of Friction Change with Increasing Mass m?

[tnutty]

Imagine a pulley system, where a puck is connected by a massless string to a massless pulley that joins a mass m that's hanging at the end of the table.

Would the force of friction change as you increase mass m , the object that's hanging? why so?

This is not a HW question.

 

[sonofahb]

no, because the string and pulley are massless?

 

[berkeman]

Imagine a pulley system, where a puck is connected by a massless string to a massless pulley that joins a mass m that's hanging at the end of the table.

Would the force of friction change as you increase mass m , the object that's hanging? why so?

This is not a HW question.

Pretty weird general interest question. Sure sounds like homework/coursework.

What is the research/work context of your question?

 

[Archosaur]

please draw a picture

 

[Doc Al]

Would the force of friction change as you increase mass m , the object that's hanging? why so?

I assume you mean the force of friction on the puck. How would you calculate that force?

 

[Cantab Morgan]

tnutty, I think what you're asking is, if I could somehow "dial down" gravity (with a possibly elaborate system of pulleys and counterweights), would friction decrease?

Well, you tell me. In the case of static friction, which is what you appear to have described, does the fricative force depend on the Normal force? Or is is just whatever value is needed to oppose motion?