Question

STUDYING FOR MAJOR PHYSICS TEST PLEASE HELP A$AP!! D:

I am of absolutely no use when it comes to Physics, but it's crucial that I pass this test. Sorry.

Which force produces the largest torque?

20.0 N perpendicular to the center of rotation at a radius of 0.5 m

20.0 N perpendicular to the center of rotation at a radius of 1.0 m

10.0 N perpendicular to the center of rotation at a radius of 0.25 m

10.0 N perpendicular to the center of rotation at a radius of 1.5 m