1. Four balls each of radius 10 cm and mass 1 kg. 2 kg, 3 kg and 4 kg are attached to theperiphery of massless plate of radius 1 m. What is the moment of inertia of the system aboutthe centre of the plate?b) 10.04 kg-md) 5.04 kg-m?a) 12.04 kg-mc) 11.50 kg-m2. One circular ring and one circular disc both having same mass and radius. The ratio ofmoment of inertia about the axis passing through their centres and perpendicular to their- planes will be-a) 1: 1b) 2:1c) 1:2d) 4: 1S12-lidiWhet in

The masses of the 4 balls are given m1 = 1 kgm2 = 2 kgm3 = 3 kgm4 = 4 kg r = 0.1 m

Answered: 1. Four balls each of radius 10 cm and…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Q5) Determine the mass moment of inertia of copper balls (Density of copper is 8940 kg / m) used in ball bearings that has a diameter of 50 mm. Express your answers in both kg . m² and kg . mm?.
F1 = 5 kN F2 = 13 kN 0- 45° 60° F3 = 4 kN A 4 m 8m F4 = 22 kN E lkJa= 30° F5 = 4 kN 1] What is the resultant moment of the five forces acting on the rod about point B? a) 40.5 kN.m b) 49.5 kN.m e) 39.1 kN.m d) 18.5 kN.m e) 9.1 kN.m ) 21.1 kN.m 2] What is the resultant moment of the five forces acting on the rod about point E? a) - 22.8 kN.m b) - 2.8 kN.m c) - 18.9 kN.m d) - 8.1 kN.m e) - 12.7 kN.m )- 7.5 kN.m 3] What is the moment of the force F1 about point D? a) - 27.8 kN.m b) - 12.8 kN.m c) - 38.9 kN.m d) - 19.1 kN.m e) - 32.7 kN.m )- 29.2 kN.m 4] What is the moment of the force F2 about point E? a) 77.5 kN.m b) 55.5 kN.m c) 14.2 kN.m d) 32.5 kN.m e) 7.1 kN.m ) 84.1 kN.m Activate Windows 5] What is the moment of the force F5 about point B? Go to Settings to activate W e) - 29.7 kN.m a) - 39.8 kN.m b) - 18.8 kN.m c) - 12.8 kN.m d) - 4.1 kN.m )- 25.9 kN.n WE
MCQ question
5. When calculating the moment of inertia of an object, can we treat all its mass as if it were concentrated at the center of mass of the object? Justify your answer
2. In the thin plate shown below, the material has a mass per unit area of 20 kg/m² (that is, instead of thinking of this as a volume with a thickness, we're just focused on the 2D area of the shape). What is the moment of inertia of this plate around the pivot point, O? 50 mm 400 mm 150 mm 150 mm 400 mm
15) What is the moment of inertia for this 1.0 m long baton spinning around its center? The center bar has a mass of 0.30 kg and each end is a "point" object with a mass of 0.50 kg A) 0.800 kg-m², B) 0.500 kg-m², C) 0.300 kg m D10275 km 5.5666s
31 - The angular momentum of a flywheel with a moment of inertia of 0.14 kg.m ^ 2 decreases from 3 kg.m ^ 2 / s to 0.8 kg.m ^ 2 / s at 1.50 s. What will be the magnitude of the average torque applied to the flywheel relative to its central axis during this time?A) -2.99 N.mB) 4.22 N.mC) 2.86 N.mD) -7.11 N.mE) -1.47 N.m
ii) A uniform sphere made of modeling clay has radius R and moment of inertia I₁ for rotation about a diameter. It is then flattened to a disk with the same radius R. What is the moment of inertia of the disk, Id, in terms of I₁? a. Id=511/4 b Id = 511/2 c. Id = 511 d. Id = 411/5 e. Id = 211/5 f. Id = I1/5
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8.
4. A playground toy has four seats, each 5.0 kg, attached to very light, 1.5 m long rods, as seen from above in the figure. If two children with masses of 15 kg and 20 kg, sit in seats opposite one another, what is the moment of inertia about the rotation axis? 1.5 m
Q16. Find the moment of inertia (I) of two 5-kg bowling balls joined by a meter long rod of negligible mass when rotated about the center of the rod. Compare this to the I of the object when rotated about one of the masses. The dot indicates the axis. (2.5 kg m²; 5 kg m²) 5-kg 5-kg 5-kg

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