A ship towed at constant speed by two tugboats, each pulling the ship with a force of 9kN. The angle between tugboat cables is 40 degrees.
A) calculate the resultant force on the ship due to the two cables B)calculate the drag force on the ship
You need to draw a diagram- have you seen diagrams with forces labelled on? Once you've drawn the diagram, most of this will be quite easy (assuming you know how to resolve forces, we'll cross that bridge when we come to it)
You need to draw a diagram- have you seen diagrams with forces labelled on? Once you've drawn the diagram, most of this will be quite easy (assuming you know how to resolve forces, we'll cross that bridge when we come to it)
there is a diagram in the text book. I used Pythagoras is that correct? but I couldn't get the right answers
there is a diagram in the text book. I used Pythagoras is that correct? but I couldn't get the right answers
Don't think you can do it using Pythagoras. To find the total pull you just need to add: resolve both vectors horizontally and vertically and add components- hopefully you can work out a (slightly) quicker way to do it in this situation from the diagram.
Don't think you can do it using Pythagoras. To find the total pull you just need to add: resolve both vectors horizontally and vertically and add components- hopefully you can work out a (slightly) quicker way to do it in this situation from the diagram.
Vertical components will cancel. Therefore you only need to add horizontal components.