A Bucket of Water with Total Mass 21

question 21

Multiple Choice

A bucket of water with total mass 21.0 kg is attached to a rope,which in turn is wound around a 0.050-m radius cylinder,with crank,at the top of a well.The moment of inertia of the cylinder and crank is 0.21 kg
M².The bucket is raised to the top of the well and released to fall back into the well.What is the kinetic energy of the cylinder and crank at the instant the bucket is moving with a speed of 5.4 m/s?

• A)4.8E+2 J
• B)1.2E+3 J
• C)3.1E+2 J
• D)1.2E+4 J

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Definitions:

Cell Membrane

The semipermeable membrane surrounding the cytoplasm of a cell, controlling the passage of substances in and out of the cell.

Muscle Fiber

The individual contractile cells of a muscle, composed of myofibrils and capable of producing force and movement.

Agonist

A chemical substance that binds to and activates specific receptors on cells, leading to a biological response.

Body Movement

The physical action resulting from the contraction of muscles, enabling humans and animals to change their position or location.