- #1
Eiano
- 12
- 0
Hello all,
I'm new to this site and think it's a great idea to have a Physics site to help with, b/c we all know physics is the devil... (j/k) :)
Anyway I have this problem which I think i figured out but want to be sure.
Suppose a block of mass 25 kg rests on a horizontal surface and the coefficient of static friction is .22
a). What is the maximum possible Fs that could act on the block.
This is what I got, Fs=m*g*Us
x=(25)(10)(.22) = 55N
b). What is the avtual Fs that acts on the block if an external force of 25N acts horizontally on the block.
ME:
55-25= 30M
And this problem:
2). A 5kg block rests on a horizontal plane a force of 10N applied horizontally causes the block to more horizontally at a constant velocity. What is the coefficient of friction b/w the block and the plane, assume G is 9.8 m/s^2.
My answer doesn't make sense because the coefficient is not between 0 and 1.0 :uhh:
Anyway:
ME:
(9.8)(5)/10= about 5
Any ideas?
Thanks in advance!
I'm new to this site and think it's a great idea to have a Physics site to help with, b/c we all know physics is the devil... (j/k) :)
Anyway I have this problem which I think i figured out but want to be sure.
Suppose a block of mass 25 kg rests on a horizontal surface and the coefficient of static friction is .22
a). What is the maximum possible Fs that could act on the block.
This is what I got, Fs=m*g*Us
x=(25)(10)(.22) = 55N
b). What is the avtual Fs that acts on the block if an external force of 25N acts horizontally on the block.
ME:
55-25= 30M
And this problem:
2). A 5kg block rests on a horizontal plane a force of 10N applied horizontally causes the block to more horizontally at a constant velocity. What is the coefficient of friction b/w the block and the plane, assume G is 9.8 m/s^2.
My answer doesn't make sense because the coefficient is not between 0 and 1.0 :uhh:
Anyway:
ME:
(9.8)(5)/10= about 5
Any ideas?
Thanks in advance!