An 80-Cm Radius Disk with a Rotational Inertia of 0

question 76

Multiple Choice

An 8.0-cm radius disk with a rotational inertia of 0.12 kg.m² is free to rotate on a horizontal axis.A string is fastened to the surface of the disk and a 10-kg mass hangs from the other end.The mass is raised by using a crank to apply a 9.0-N.m torque to the disk.The acceleration of the mass is:

• A)0.50 m/s²
• B)3.9 m/s²
• C)6.0 m/s²
• D)12 m/s²
• E)20 m/s²

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Definitions:

Controllable Variance

The difference between actual budgeted costs and the controllable costs within a budget period.

Fixed Factory Overhead

Indirect manufacturing costs that remain relatively constant regardless of the level of production, such as rent, depreciation, and salaries of factory supervisors.

Volume Variance

The difference between the expected volume of sales or production and the actual volume, which can impact costs and profitability.

Fixed Factory Overhead

The consistent, non-variable costs associated with operating a factory, such as rent, utilities, and salaried personnel.