A football coach sits on a sled while two of his players build their strength by dragging the sled across the field with ropes. The friction force on the sled is 800 N and the angle between the two ropes is 20°. How hard must each player pull to drag the coach at a steady 2.0 m/s?

Question

bobpursley · Answer

I see the error. Then angle between the ropes is 20, but the angle between the rope and the resultant force is 10. Tension*cos10=400

Marie-Lyne Rizkallah · Answer

Since they want a steady velocity, then the sum of all forces is 0. Which means that the resultant of the two ropes is in equilibrium with the friction force.