A Heavy Wooden Block Is Dragged by a Force

question 28

Multiple Choice

A heavy wooden block is dragged by a force along a rough steel plate, as shown below for two possible situations. The magnitude of is the same for the two situations. The magnitude of the frictional force in (ii) , as compared with that in (i) is:

• A) the same
• B) greater
• C) less
• D) less for some angles and greater for others
• E) can be less or greater, depending on the magnitude of the applied force.

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Definitions:

Volcanic Glass

A type of rock that forms from the rapid cooling of magma without crystallization, resulting in a smooth, glassy texture.

Volcanic Dome

A rounded mound formed by the slow extrusion of viscous lava from a volcano.

Composite Volcanoes

Composite volcanoes, also known as stratovolcanoes, are tall, conical volcanoes built up by many layers (strata) of hardened lava, tephra, pumice, and volcanic ash.

Rubble-covered

Describes a surface or area that is scattered with broken stones, bricks, and other fragments, often resulting from destruction or decay.