Which of the statements below about buoyancy is true?

1 answer:

4 0

A. The buoyant force only acts on objects in water. - The buoyant force can act in ANY liquid, not just water

B. The buoyant force is always stronger than the force of gravity. - This is false. The buoyant force is dependent on the size of the object and not gravity

C. The buoyant force causes objects to sink more quickly than 9.8 m/s2. - This is false, since the buoyant force ALWAYS acts opposite of gravity.

D. The buoyant force always pushes objects up towards the surface of the fluid. - This is true

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Which statements are true about galaxies, stars, and the universe? (more than one true answer by the way)

Elina [12.6K]

Answer:

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Explanation:

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3 years ago

SP: Calculate the moment

ipn [44]

Answer:

Moment of the force is 20 N-m.

Explanation:

Given:

Force exerted by the person is, $F=80\ N$

Distance of application of force from the point about which moment is needed is, $d=25\ cm=\frac{25}{100}\ m=0.25\ m$

Now, we know that, moment of a force 'F' about a point at a perpendicular distance of 'd' from the same point is given as the product of the force and the perpendicular distance.

Therefore, the moment of the force about the end of the claw hammer is given as:

$M=F\times d\\\\M=(80\ N)(0.25\ m)\\\\M=20\textrm{ N-m}$