39.- A small sphere of lead with a mass of 25g is connected to the origin by a thin rod of 74cm and negligible mass. The rod rotates around the z axis in the (x,y) plane. A constant force of 22N in the "y" direction acts on the sphere. a) Assuming that the sphere is a particle, what will be the rotational inertia about the origin? b) If the rod makes an angle of 40° with the positive x-axis, calculate its angular acceleration. 40.- Three particles are connected to a thin rod one meter long and of negligible mass that rotates around the origin in the (x,y) plane. Particle 1 (mass 52g) is attached at a distance of 27cm from the origin, particle 2 (35g) is at 45cm and particle 3 (24g) is at 65cm. a) What is the rotational inertia of the system? b) if instead the rod rotated around the center of mass of the system, what would its rotational inertia be?

39.- A small sphere of lead with a mass of 25g is connected to the origin by a thin rod of 74cm and negligible mass. The rod rotates around the z axis in the (x,y) plane. A constant force of 22N in the "y" direction acts on the sphere. a) Assuming that the sphere is a particle, what will be the rotational inertia about the origin? b) If the rod makes an angle of 40° with the positive x-axis, calculate its angular acceleration. 40.- Three particles are connected to a thin rod one meter long and of negligible mass that rotates around the origin in the (x,y) plane. Particle 1 (mass 52g) is attached at a distance of 27cm from the origin, particle 2 (35g) is at 45cm and particle 3 (24g) is at 65cm. a) What is the rotational inertia of the system? b) if instead the rod rotated around the center of mass of the system, what would its rotational inertia be?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter11: Angular Momentum

Section: Chapter Questions

Problem 74P: Neptune has a mass of 1.01026kg and is 4.5109km from the Sun with an orbital period of 165 years....

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