A Crate Travels Through a Factory on a Conveyor Belt

question 88

Multiple Choice

A crate travels through a factory on a conveyor belt (without slipping) at a constant speed. The conveyer belt is inclined at some non-zero angle above the horizontal. If air resistance is negligible, what forces are active on the box?

• A) normal force, weight, static friction, kinetic friction
• B) normal force, weight, static friction
• C) normal force, weight, static friction, force of the conveyor belt
• D) normal force and weight

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Definitions:

Composite Volcanoes

Volcanoes characterized by explosive eruptions and composed of alternating layers of lava and volcanic ash.

Pyroclastic Material

Fragmented material ejected during volcanic eruptions, including ash, bomb, lapilli, and volcanic blocks, which varies in size, shape, and composition.

Mudflows

Rapid downhill movement of water-laden earth materials, primarily composed of fine-grained soils and clays, which can cause significant erosion and damage.

Pyroclastic Flow

A hot, fast-moving and deadly mixture of gases, ash, and volcanic material produced by explosive eruptions.