8.7 please answer part b, other parts are answered. The answers I have gotten are 11025 and -11025 but they are both wrong

Principles of Physics: A Calculus-Based Text
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Chapter11: Gravity, Planetary Orbits, And The Hydrogen Atom
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8.7 please answer part b, other parts are answered. The answers I have gotten are 11025 and -11025 but they are both wrong

Problem 7: Suppose a 225 kg motorcycle is heading toward a hill at a speed of 28 m/s. The two wheels weigh 12 kg each and are
each annular rings with an inner radius of 0.280 m and an outer radius of 0.330 m.
Randomized Variables
m = 225 kg
v = 28 m/s
h = 35 m
Part (a) How high can it coast up the hill, if you neglect friction in m?
Numeric : A numeric value is expected and not an expression.
h =
43.66
Part (b) How much energy is lost to friction if the motorcycle only gains an altitude of 35 m before coming to rest?
Numeric : A numeric value is expected and not an expression.
AE =
Transcribed Image Text:Problem 7: Suppose a 225 kg motorcycle is heading toward a hill at a speed of 28 m/s. The two wheels weigh 12 kg each and are each annular rings with an inner radius of 0.280 m and an outer radius of 0.330 m. Randomized Variables m = 225 kg v = 28 m/s h = 35 m Part (a) How high can it coast up the hill, if you neglect friction in m? Numeric : A numeric value is expected and not an expression. h = 43.66 Part (b) How much energy is lost to friction if the motorcycle only gains an altitude of 35 m before coming to rest? Numeric : A numeric value is expected and not an expression. AE =
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