Integrated Concepts - The axis of Earth makes a 23.5° angle with a direction perpendicular to the plane of Earth’s orbit. This axis precesses, making one complete rotation in 25,780 y. (a) Calculate the change in angular momentum in half this time. (b) What is the average torque producing this change in angular momentum? (c) If this torque were created by a single force (it is not) acting at the most effective point on the equator, what would its magnitude be?

Integrated Concepts - The axis of Earth makes a 23.5° angle with a direction perpendicular to the plane of Earth’s orbit. This axis precesses, making one complete rotation in 25,780 y. (a) Calculate the change in angular momentum in half this time. (b) What is the average torque producing this change in angular momentum? (c) If this torque were created by a single force (it is not) acting at the most effective point on the equator, what would its magnitude be?

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The axis of Earth makes a 23.5° angle with a direction perpendicular to the plane of Earth’s orbit. As shown below, this axis precesses, making one complete rotation in 25,780 y.(a) Calculate the change in angular momentum in half this time.(b) What is the average torque producing this change in angular momentum?(c) If this torque were created by a pair of forces acting at the most effective point on the equator, what would the magnitude of each force be?
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Hi please help: A 20-kg sphere 0.05 m in radius starts from rest and rolls (without slipping) 8.0 m down a ramp that is inclined at 30 degrees with the horizontal. (a) What is the angular speed of the sphere at the bottom of the slope if it starts from rest? (b)How much rotational kinetic energy does the sphere have at the bottom of the slope?
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