A Block of Wood of Mass 400 G and Density

question 15

Multiple Choice

A block of wood of mass 400 g and density 0.8 g/cm³ is floating on the surface of a liquid of density 1.3 g/cm³.What is the difference in mass of stone (density = 1.9 g/cm³) that must be added to the block in order for the combination (wood and stone) to be just submerged rather than only the wood to be submerged?

• A)250 g
• B)540 g
• C)170 g
• D)790 g
• E)none of the above

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Definitions:

Rotation

The action or process of rotating on or as if on an axis or center, commonly used to describe movement in anatomy or mechanical systems.

Synovial Joint

A type of joint that is encased in a capsule filled with synovial fluid, facilitating smooth movement between bones.

Tendon Sheath

A protective layer surrounding a tendon, facilitating smooth movements of the tendon when the muscle contracts and relaxes.

Joint Cavity

The space between the articulating bones of a joint, filled with synovial fluid that lubricates and nourishes the joint.