Can somebody help me solve this physics problem?

[neonerd]

As much as i hoped and thought i knew, i'm kind of stumped with this one:

A 65.0-kg man is about to run across an icy pond. The coefficient of static friction between his shoes and the ice is 0.160. What is his maximum possible acceleration?

Can anybody tell me how to do this? not just the anwer, i'd like to know the process as well. thx.

 

[Anubis]

find the normal force multiply that by the coeff of friction to get force of friction plug that into F=ma, solve for a


now find the answer to this one for me

 

[Semidevil]

I love physics..even though I dont remeber any more how to solve any of the problems, I still enjoy reading about the solutins...

 

[Howard]

Originally posted by: Anubis
find the normal force multiply that by the coeff of friction to get force of friction plug that into F=ma, solve for a


now find the answer to this one for me

I don't even know what that symbol represents...

 

[Anubis]

its the Gradient

and thats actually not that hard to solve

 

[neonerd]

Originally posted by: Anubis
find the normal force multiply that by the coeff of friction to get force of friction plug that into F=ma, solve for a


now find the answer to this one for me

geez...i have no clue;

PM DrPizza...he's a physics teacher and should know 🙂

thx for the solution 😉

 

[sciencewhiz]

Originally posted by: Anubis
find the normal force multiply that by the coeff of friction to get force of friction plug that into F=ma, solve for a

The frictional F is constant (as above). No other F is mentioned, but theoretically an infinite force could cause him to have infinite acceleration.

Do they mean the deceleration with no other applied forces?

 

[Anubis]

Originally posted by: neonerd

Originally posted by: Anubis
find the normal force multiply that by the coeff of friction to get force of friction plug that into F=ma, solve for a


now find the answer to this one for me

geez...i have no clue;

PM DrPizza...he's a physics teacher and should know 🙂

thx for the solution 😉

i know the answer its easy

but you are in HS IIRC so you most likely have no idea what any of that means

 

[DrPizza]

To be honest with you, it's been wayyy to long since I did problems like that. I don't even approach that in high school physics... that's about 3rd year college stuff. Not extremely difficult, but definitely a pita if I wanted to skim through notes and type a solution.

 

[DrPizza]

But, that question made me decide to review it a bit anyway. Here's a cool link I found with some solutions to similar types of problems with various types of forces. (including one example where it doesn't equal zero)

http://physweb.mnstate.edu/phys330/HW/ps2.pdf

 

[jaydee]

Originally posted by: Anubis
its the Gradient

and thats actually not that hard to solve

Umm... where I go to school, we call that a curl. Gradient doesn't involve a cross product.

 

[TuxDave]

Originally posted by: jaydee

Originally posted by: Anubis
its the Gradient

and thats actually not that hard to solve

Umm... where I go to school, we call that a curl. Gradient doesn't involve a cross product.

lol.... I agree. That is a curl and not a gradient.

 

[Anubis]

the symbol (Del, upside down triangle) is the gradiant thats what i thought he was refering to i know thats a curl

 

[effee]

what are you in high school?

 

[jaydee]

Originally posted by: TuxDave

Originally posted by: jaydee

Originally posted by: Anubis
its the Gradient

and thats actually not that hard to solve

Umm... where I go to school, we call that a curl. Gradient doesn't involve a cross product.

lol.... I agree. That is a curl and not a gradient.

Sweet, I'm not losing my mind (or at least I'm not the only one).

 

[TuxDave]

Originally posted by: Anubis
the symbol (Del, upside down triangle) is the gradiant thats what i thought he was refering to i know thats a curl

heh.. I figured you knew what you were talking about. Your solution uses curl equations to solve it and you actually states 'curl equations'.