What Is the Maximum Mass and Weight That Can Be Moved Without Breaking the Wire?

[jewjew]

Homework Statement

A horizontal wire is used to drag a crate at a constant velocity across a floor where the kinetic coefficient of friction is .35. If the wire will break under tensions exceeding 1000 Nt, find the mass and weight of the largest crate which can be moved. (Need help bad! Been figuring this problem out for almost an hour now!)

Homework Equations

Only one equation teacher gave me is Fs(max)=UsN
Coefficient of Kinetic Friction state on my notes for this example. he made us copy that before class was dismissed and said use it on our h.w., figured 2/3 already.

The Attempt at a Solution

a) For mass: 1000 = (.35)(x)(9.8 m/s(2))
x=292 Nt
b) For Weight: X = (.35)(292 Nt)(9.8 m/s^(2))
X = 1002

I don't even know if this equation helps for this example because its not making sense to me! Can somebody please help! Thank You.

 

[JasonGodbout]

a) You got the first equation right but your answer is in Kg.

b) And the weight should be (mass) X (acceleration of gravity) =

( if I remember my mechanic correctly :)