Part a says x part b says y and part c is z The L-shaped object in the figure co

Question

Part a says x part b says y and part c is z

The L-shaped object in the figure consists of three masses connected by light rods. Part A Find the work that must be done on this object to accelerate it from rest to an angular speed of 2.05 about the. axis. Express your answer using two significant figures Submit My Answers Give Up Part B About the, axis. Express your answer using two significant figures. Submit My Answers Give Up Part C About the. axis (which is through the origin and perpendicular to the plane of the figure). Express your answer using two significant figures.

Explanation / Answer

moment of inertia about x axis = mass of the object on y axis * 1^2

moment of inertia about x axis = 2 * 1^2

moment of inertia about x axis = 2 kg.m^2

work done = change in rotational knetic energy

work done = 0.5 * 2 * 2.05^2

work done = 4.2025 J

moment of inertia about y axis = mass of the object on x axis * 2^2

moment of inertia about y axis = 2.5 * 2^2

moment of inertia about y axis = 10 kg.m^2

work done = 0.5 * 10 * 2.05^2

work done = 21.0125 J

moment of inertia about z axis = mass of the object on x axis * 1^2 + mass of the object on y axis * 2^2

moment of inertia about z axis = 2 * 1^2 + 2.5 * 2^2

moment of inertia about z axis = 12 kg.m^2

work done = 0.5 * 12 * 2.05^2

work done = 25.215 J

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