Posted by **Sasha** on Thursday, November 19, 2009 at 9:38pm.

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?

- Physics -
**bandit**, Thursday, November 19, 2009 at 10:08pm
does it tell u how much coach weighs

- Physics -
**MathMate**, Thursday, November 19, 2009 at 10:54pm
The net total force on the sled through the ropes is

F=2T cos(10°), where T is the tension on each rope.

Let m be the mass of the coach + the sled.

Then F-800=ma

where 800 = frictional force

m=total mass of coach and sled

a=acceleration = 2 m/s.

Solve for T.

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