Unit 6 – Rotating Systems: Energy & Momentum

/ Unit 6 – Rotating Systems: Energy & Momentum

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You’ll explore the energy and momentum of an object rotating around an axis and you’ll connect those concepts to their linear analogs.

Question Difficulty:

Question	Difficulty	Students Solved
Satellite Escape Velocity	hard	15
Conservation of Angular Momentum in a Collision	medium	12
Forces on a Satellite in Orbit	easy	16
Conservation of Angular Momentum	hard	14
Rotational and Translational Kinetic Energy	medium	3
Net Torque on a Combined System	easy	9
Change in Angular Momentum	easy	11
Net Torque and Constant Angular Momentum	easy	13
Condition for Rolling Without Slipping	medium	6
System Choice and Angular Momentum Conservation	hard	10
Rotational Motion and Kinetic Friction	easy	7
Center of Mass and Rotational Motion	medium	3
Rotational Kinematics and Constant Torque	medium	3
Angular Impulse Definition	easy	6
Angular Momentum of a Rolling Hoop	medium	6
Angular Momentum in an Elliptical Orbit	easy	3
Conservation in Elliptical Orbits	medium	7
Angular Impulse and Angular Momentum	easy	7
Angular Impulse from Time-Varying Torque	hard	4
Comparing Angular Impulses	easy	6

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Rank	User	Correct Count	Attempt Count	Time	Score
#1	dxie26808	216	313	0m 00s	20,630
#2	prisham2020	38	60	0m 00s	3,580
#3	nmtnice2010	34	47	0m 00s	3,270
#4	jchenlisg	29	46	0m 00s	2,730
#5	lilianly52	24	42	0m 00s	2,220
#6	shakthi.durai11	13	14	0m 00s	1,290
#7	miller.chen2011	13	21	0m 00s	1,220
#8	siyeonkim4837	13	21	0m 00s	1,220
#9	dhithyaram	12	15	0m 00s	1,170
#10	p250001155	11	17	0m 00s	1,040

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