The Attempt at a Solution

So, I got the answer to be 126 radians BUT my answer was wrong because it was suppose to be NEGATIVE 126 radians. Can someone explain why my answer was suppose to be negative?

Related Introductory Physics Homework Help News on Phys.org
haruspex
Homework Helper
Gold Member
2020 Award
Can someone explain why my answer was suppose to be negative?
The wagon is moving in the +x direction. Which way will the wheels rotate? What is the usual convention for the sign of a rotation in planar co-ordinates?

(That said, I think it could me made clearer that a signed value is wanted, not just a magnitude.)

The wagon is moving in the +x direction. Which way will the wheels rotate? What is the usual convention for the sign of a rotation in planar co-ordinates?

(That said, I think it could me made clearer that a signed value is wanted, not just a magnitude.)
wheels will rotate clockwise.

haruspex
Homework Helper
Gold Member
2020 Award
wheels will rotate clockwise.
Yes, and what is usually taken as the positive direction for a rotation in the plane?

Yes, and what is usually taken as the positive direction for a rotation in the plane?
I thought it didn't matter which direction you set to be positive or negative.

haruspex