Question

The figure below shows the horizontal forces acting on a sailboat moving north at constant velocity, seen from a point straight above its mast. At its particular speed, the water exerts a 215 N drag force, D, on the sailboat's hull. (a) Choose the x direction as east and the y direction as north. Write two component equations representing Newton's second law. Solve the equations for P (the force exerted by the wind on the sail) and for n (the force exerted by the water on the keel). P = N n = N (b) Choose the x direction as 40.0° north of east and the y direction as 40.0° west of north. Write Newton's second law as two component equations and solve for n and P. P = N n = N (c) Compare your solutions. Do the results agree? No Yes

          The figure below shows the horizontal forces acting on a sailboat moving north at constant velocity, seen from a point straight above its mast. At its particular speed, the water exerts a 215 N drag force, D, on the sailboat's hull.

(a) Choose the x direction as east and the y direction as north. Write two component equations representing Newton's second law. Solve the equations for P (the force exerted by the wind on the sail) and for n (the force exerted by the water on the keel).
P = N
n = N

(b) Choose the x direction as 40.0° north of east and the y direction as 40.0° west of north. Write Newton's second law as two component equations and solve for n and P.
P = N
n = N

(c) Compare your solutions. Do the results agree?
No
Yes

The figure below shows the horizontal forces acting on a sailboat moving north at constant velocity, seen from a point straight above its mast. At its particular speed, the water exerts a 215 N drag force, D, on the sailboat's hull.

(a) Choose the x direction as east and the y direction as north. Write two component equations representing Newton's second law. Solve the equations for P (the force exerted by the wind on the sail) and for n (the force exerted by the water on the keel).
P = N
n = N

(b) Choose the x direction as 40.0° north of east and the y direction as 40.0° west of north. Write Newton's second law as two component equations and solve for n and P.
P = N
n = N

(c) Compare your solutions. Do the results agree?
No
Yes

Added by Robert M.

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