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:

Fructose-1,6-bisphosphate

A fructose sugar phosphorylated on carbons 1 and 6, an important intermediate in glycolysis which breaks down sugar for energy production in cells.

Aerobic Respiration

A metabolic process in which cells convert biochemical energy, typically from carbohydrates, into ATP, with the consumption of oxygen.

Mitochondrion

An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It is often referred to as the powerhouse of the cell.

Glycolysis

The metabolic pathway that breaks down glucose to pyruvate, generating ATP and NADH, occurring in the cytosol of cells.