Vectors

[Gughanath]

a horse pulls a barge along a canal using a rope 10m long. if the barge is 2m from the bank, the rope is taught and the tension in it is 500N. what are the components of this force at right angles to the canal?
i worked this out to be 99.7N i used 500 x sin 11.5 (the angle between the rope and the bank)

[Fredrik]

The result should be 100 N. (It has to be one fifth of the force in the direction of the rope, because the distance from the bank is one fifth of the length of the rope). If you get 97.5 N it must be because of a roundoff error. The angle isn't exactly 11.5.