A 350-N Crate Is Pulled Up a 4

Multiple Choice

A 35.0-N crate is pulled up a 4.0-m inclined plane by a worker at constant velocity.If the plane is inclined at an angle of 37° to the horizontal and there exists a constant frictional force of 25.0 N between the crate and the surface,what is the force applied by the worker?

A) zero
B) 3.95 N
C) 21.1 N
D) 46.1 N
E) 84.2 N