1. B)The wheel should rotate in a counterclockwise (CCW) direction because the force exerted on the water by the blade is in the direction opposite to the force exerted by the blade on the water.
2. A) T=Wbottom+Wtop+Fadhesion
1.a paddle boat is propelled to the left in the figure above by a wheel of nine flat blades that rotate about a central axis. which of the following is correct?
A) The wheel should rotate in a clockwise (CW) direction because the force exerted on the water by the blade is in the direction opposite to the force exerted by the blade on the water.
B)The wheel should rotate in a counterclockwise (CCW) direction because the force exerted on the water by the blade is in the direction opposite to the force exerted by the blade on the water.
C)The wheel should rotate in a counterclockwise (CCW) direction because the force exerted on the water by the blade is in the direction opposite to the force exerted by the blade on the water.
D)The wheel should rotate in a clockwise (CW) direction because the force exerted on the water by the blade is in the direction exerted by the blade on the water.
2.As shown above an adhesive has been applied to contacting faces of two blocks so that the blocks interact with an adhesive force that has a magnitude, F Adhesion . A tension, T , is exerted by a wire attached to the upper blocks causing the blocks to remain at rest. The two blocks have weights, W Bottom and W Top . Which of the following must be true?
A) T=Wbottom+Wtop+Fadhesion
B)T=Wtop-Fadhesion
C)Wbottom=Fadhesion
D)Wtop=T
1 answer