You Push Downward on a Box at an Angle 25°

question 91

Multiple Choice

You push downward on a box at an angle 25° below the horizontal with a force of 750 N. If the box is on a flat horizontal surface for which the coefficient of static friction with the box is 0.76, what is the mass of the heaviest box you will be able to move?

• A) 59 kg
• B) 68 kg
• C) 54 kg
• D) 82 kg

---

Definitions:

Citric Acid Cycle

Cycle of reactions in mitochondria that begins with citric acid. This cycle breaks down an acetyl group and produces CO2, ATP, NADH, and FADH2; also called the Krebs cycle.

Prep Reaction

A phase in cellular respiration, often referring to the preparation steps that convert pyruvate for entry into the Krebs cycle.

Glycolysis

Anaerobic breakdown of glucose that results in a gain of two ATP and the production of pyruvate; occurs in the cytoplasm of cells.

Electron Transport Chain

A sequence of electron carrier molecules that transfer electrons and release energy used to make ATP, found in the inner mitochondrial membrane.