Physics 6A Ch4Worksheet

# Physics 6A Ch4Worksheet - θ www.clas.ucsb.edu/staff/vince...

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www.clas.ucsb.edu/staff/vince Physics 6A Ch 4 – In Class Worksheet 1) You are standing on a scale in an elevator. When the elevator is at rest the scale reads 750 N. You press the button for the top floor and the elevator begins to accelerate upward at a constant rate. a) Draw a free body diagram for this situation. b) If the scale now reads 850 N what is the acceleration of the elevator? c) Now suppose the elevator is accelerating downward at 2.0 m/s 2 . What is the reading on the scale? 2) A snow boarder of mass m slides down a slick, ice-covered (frictionless) hill inclined at angle θ with respect to the horizontal. (a) What is the acceleration of the boarder? (b)What is the normal force exerted on the snow boarder?

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Unformatted text preview: θ www.clas.ucsb.edu/staff/vince Physics 6A Ch 4 – In Class Worksheet (Page 2) 3) Jack and Jill lift upward on a 1.3kg pail of water, with Jack exerting a force F 1 of magnitude 7.0N and Jill exerting a force F 2 of magnitude 11.0N. Jill’s force is exerted at an angle of 28 degrees with the vertical, as shown below. At what angle with respect to the vertical should Jack exert his force if the pail is to accelerate straight upward? Find the acceleration. 4) A 6.0kg block of ice is acted on by two forces, F 1 and F 2 , as shown in the diagram. If the magnitudes of the forces are F 1 =13N and F 2 = 11N, find (a) the acceleration of the ice and (b) the normal force exerted on it by the table....
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Physics 6A Ch4Worksheet - θ www.clas.ucsb.edu/staff/vince...

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