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https://session masteringphysics.com myct/itemView?offset-next&assignmentproblemlD; 633 768 0 AP Physics 1 Signed in as Maddie Kramber Hee Enal Exam Reviow Problem 6 28 « previous | 5 of 20 Problem 6.28 Part A An 80 ft-diametor Forris wheel rotates once every 25 s What is the apparent weight of a 79 kg passenger at the lowest point of the circle? Express your answer in SI units Express your answer to two significant figures and include the appropriate units. 835 N My Answers Give Up Correct Significant Figures Feedback: Your answer 835 N was either rounded differently or used a different number of significant figures than required for this part Part B What is the apparent weight of a 79 kg passenger at the units Express your answer to two significant figures and include the appropriate units HA 743 Submit My Answers Give Up Incorrect: Trv Aaain: 2 attemptsExplanation / Answer
The radius of the wheel is,
R = 80 ft / 2 = 40 ft = 12.19 meter
The angular velocity of the wheel is,
w = 2*pi / T = 2*3.14 / 25 = 0.2512 rad/s
The velociyt of the wheel is,
v = Rw = 12.19 * 0.2512 = 3.06 m/s
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(a)
The apparent weight at bottom is,
W = mg + mv^2 / R
W = m (g + v^2 / R )
W = 79 kg (9.8 + 3.06 m/s^2 / 12.19 )
W = 834.9 N
W = 835 N
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(b)
The apparent weight at top is,
W = mg - mv^2 / R
W = m (g - v^2 / R )
W = 79 kg (9.8 - 3.06 m/s^2 / 12.19 )
W = 713.4 N
W = 713 N
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