Asked by Maria Ellah

A force of 250 N is just sufficient to start a 50 kg steel trunk moving across a wooden floor. Find the coefficient of static friction.
Answered by drwls
Use what you have learned from my previous three answers to attempt this yourself.
Answered by Maria Ellah
Sir, static and kinetic are different isn't it?
Answered by drwls
Yes they are different.

250 N = M*g*Us = 490N * Us
Solve for Us, the static friction coefficient.
Us tells you how big the applied force must be to make it move.
Answered by Maria Ellah
Sir, gonna have some favor. What will be the formula to use?
Answered by drwls
I already wrote and substituted numbers in the formula above.

(Force required to move) = (Weight)*Us

Us = (Force required to move)/(Weight)
= 250/490

This formula applies on level horizontal ground only
Answered by Maria Ellah
thanks sir. that's what i'm gonna ask. for horizontal ground only. Godspeed! :)
Answered by kh
aforce of 200N is just sufficient to start a 50-kg steel trunk moving across awooden floor. find the coefficient of static friction
Answered by Rhoda
aforce of 200N is just sufficient to start a 50-kg steel trunk moving across awooden floor. find the coefficient of static friction
Answered by Vincent
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