A 50-N crate is pulled up a 5-m inclined plane by a worker at constant velocity.If the plane is inclined at an angle of 37 $\degree$ to the horizontal and there exists a constant frictional force of 10 N between the crate and the surface,what is the force applied by the worker?
A)zero
B)20 N
C)30 N
D)40 N

Question

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The Answer of A 50-N crate is pulled up a 5-m inclined plane by a worker at constant velocity.If the plane is inclined at an angle of 37 $\degree$ to the horizontal and there exists a constant frictional force of 10 N between the crate and the surface,what is the force applied by the worker?
A)zero
B)20 N
C)30 N
D)40 N

A 50-N Crate Is Pulled Up a 5-M Inclined Plane °\degree°

A 50-N Crate Is Pulled Up a 5-M Inclined Plane $\degree$