physics
posted by grace .
could someone tell me how to do this?
1. A diagram illustrating several tugboats applying forces to a barge is shown below. What is the magnitude and direction of force does tugboat C (Fc) need to apply to keep the tugboat from moving?
C:\Documents and Settings\26536\My Documents\Downloads\sO6UEzpWM5rX2LXyP_t29Ug.png
that is the link to the picture

Your link is to the hard disk of your computer. No one else has access to it.
If you wish, you could upload it to one of the many image servers available to the public free of charge, and we'd be able to see the picture through your link.
To be honest, you are generally not able to post a link. If that's the case, please post a detailed description. 
oh... i feel stupid

it wont let me post the whole thing, but here is some.
ok, the picture has a rectangle in the middle, with the long sides horizontal. coming out of the left side is a "tugboat" connected to a rope. it is labelled Fa=7500 N. 
here is the rest
coming out of the upper right corner of the rectangle is another tugboat. the angle between the boat and the side of the rectangle is 140 degrees. this boat is labelled Fb=5000N
Fc is sticking out of the bottom of the boat 
Would it be:
"Fc is sticking out of the bottom of the barge"?
So there is a system of three forces that we would like to stay in equilibrium.
The two methods in use would be
1. the triangle of forces, by which the force vectors are joined headtotail. Since the direction of all three are known, as well as two of the magnitudes, the third can be found by trigonometry.
2. The other method is by resolution into the coordinate axes, namely
ΣFx=0, and
ΣFy=0.
Try one or both of the methods and post your answer for checking.
In this case, if I understand the diagram correctly, Fc is vertically "downwards", you could use the second equation of method 2 to get:
Fc*sin(90)=Fb*sin(140)
from which you can solve for Fc explicitly.
Respond to this Question
Similar Questions

physics
A horse pulls a barge down a canal. The horse pulls on the rope with a force of 7900 N at an angle of 18 degrees to the direction of motion of the barge, which is heading straigt along the canal. The mass of the barge is 9500kg and … 
physics
A horse pulls a barge down a canal. The horse pulls on the rope with a force of 7900 N at an angle of 18 degrees to the direction of motion of the barge, which is heading straigt along the canal. The mass of the barge is 9500kg and … 
PHYSICSNet external Force
1. Two tugboats pull a barge across the harbor. one boat exerts of force of 7.5 x 10^4 N North, while the second boat exerts a force of 9.5 x 10^4 N at 15.0 degrees north of west. Precisely, in what direction does the barge move? 
Physics
Two tugboats are pulling a freighter. Find the net force and direction of the acceleration for the following cases. Assume that each tugboat pulls with a force of 1.2 x 10^5 N. Assume no resistive force at this time. a) Tugboat 1 pulls … 
Physics
The helicopter view in the figure below shows two people pulling on a stubborn mule. Assume that F1 is 130 N, and F2 is 65 N. The forces are measured in units of newtons (N). (a) Find the single force that is equivalent to the two … 
Physics
An 100.0N crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 29.0° to the ground. (b) The interaction partner of this normal force has what magnitude and direction? 
trig
A barge is pulled by two tugboats. The first tugboat is traveling at a speed of 16 knots with heading 135°, and the second tugboat is traveling at a speed of 15 knots with heading 195°. Find the resulting speed and direction of the … 
trig
A barge is pulled by two tugboats. The first tugboat is traveling at a speed of 12 knots with heading 140°, and the second tugboat is traveling at a speed of 17 knots with heading 200°. Find the resulting speed and direction of the … 
PHYSICS
Two tugboats are towing as barge. Each exerts a force of 5.0 tons and the angle between two ropes is 30 degrees. Find the resultant force exerted the barge. 
Physics PLEASE HELP
The two barges shown here are coupled by a cable of negligible mass. The mass of the front barge is 2.22 ✕ 10^3 kg and the mass of the rear barge is 3.22 ✕ 10^3 kg. A tugboat pulls the front barge with a horizontal force of magnitude …