# Tension problem :/

by mrrocketknigh
Tags: cosine, physics, sine, tan, tension
 P: 7 Here's the problem: A sledge loaded with bricks has a total mass of 18.0 kg and is pulled at constant speed by a rope inclined at 20.0(degrees) above the horizontal. The sledge moves a distance of 20.0m on a horizontal suface. The coefficient of kinetic friction between the sledge and surface is 0.500. (a) What is the tension of the rope? I don't know how to even start this problem, or how to find out what the tension is. Can anybody help me? 1. The problem statement, all variables and given/known data 2. Relevant equations 3. The attempt at a solution
 Sci Advisor HW Helper Thanks P: 26,148 hi mrrocketknigh! welcome to pf! if the speed is constant, then the acceleration is zero, so Ftotal = ma tells us that Ftotal = 0 so draw all the forces on the sledge, and get them to add to zero … what do you get?
 P: 7 What do you mean by "draw all the forces on the sledge and get them to add to zero"? I'm lost.
 P: 7 Tension problem :/ Wait... is it 0??? I tried doing it myself this whole time, but to no avial...
HW Helper
Thanks
P: 26,148
 Quote by mrrocketknigh What do you mean by "draw all the forces on the sledge and get them to add to zero"? I'm lost.
draw a diagram of the sledge, then draw all the forces on it …
what are they?

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