Block A, with a Mass of 50 Kg, Rests on a Horizontal

question 25

Multiple Choice

Block A, with a mass of 50 kg, rests on a horizontal table top. The coefficient of static friction is 0.40. A horizontal string is attached to A and passes over a massless, frictionless pulley as shown. The smallest mass m_B of block B, attached to the dangling end, that will start A moving when it is attached to the other end of the string is:

• A) 20 kg
• B) 30 kg
• C) 40 kg
• D) 50 kg
• E) 70 kg

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Definitions:

Nucleus

A membrane-bound organelle found in eukaryotic cells that contains the genetic material.

Capillaries

Tiny blood vessels connecting arterioles and venules, facilitating the exchange of water, oxygen, carbon dioxide, and many other nutrient and waste chemical substances between blood and tissues.

Erythrocytes

Red blood cells that are responsible for carrying oxygen from the lungs to the body tissues and carbon dioxide as a waste product back to the lungs.

Systemic Circuit

Circuit through which blood flows from the heart to the body tissues and back.