A Rope Pulls on the Lower Block in the Figure

question 1

Multiple Choice

A rope pulls on the lower block in the figure with a tension force of 20 N. The coefficient of kinetic friction between the lower block and the surface is 0.16. The coefficient of kinetic friction between the lower block and the upper block is also 0.16. The pulley has no appreciable mass or friction. What is the acceleration of the 2.0 kg block?

• A) 4.1 m/s²
• B) 5.1 m/s²
• C) 8.4 m/s²
• D) 9.2 m/s²

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Definitions:

Tsunami

A series of ocean waves with extremely long wavelengths caused by large-scale disturbances of the ocean, such as earthquakes, volcanic eruptions, or underwater landslides.

P-Wave

A type of seismic wave that compresses and expands the ground, being the fastest kind of seismic wave and the first to be recorded by seismographs during an earthquake.

Velocity

The speed of something in a given direction.

Density

A physical property that describes the mass of a substance per unit volume.