49. (a) At the top (the highest point in the circular motion) the seat pushes up on the student with a force of magnitude FN= 556 N. Earth pulls down with a force of magnitude W= 667 N. The seat is pushing up with a force that is smaller than the student’s weight, and we say the student experiences a decrease in his “apparent weight” at the highest point. Thus, he feels “light.” (b) Now FNis the magnitude of the upward force exerted by the seat when the student is at the lowest point. The net force toward the center of the circle is
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.