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lesya [120]
3 years ago
14

A block hangs at rest from the ceiling by a piece of rope. Consider the forces acting on the block. Is gravity present or absent

?
Physics
2 answers:
LuckyWell [14K]3 years ago
6 0
There are two forces operating on the block. A downward force due to acceleration and an upward force due to the rope.
Whether gravity is operating depends on where this takes place. If it's on Earth the answer is "yes - the Earth's gravity". However, it is on an accelerating space craft then acceleration is due to change in velocity rather than gravity. For the sake of simplicity, assume the experiment takes place on Earth, but it's worth mentioning that with the information given here you can't say for sure whether it is gravity or change in velocity that is causing the downward force.
lyudmila [28]3 years ago
3 0
Gravity is present but the rope is keeping it from falling so it may not look like it is present. By the way, air reistance is also present.
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The new deal helped fix the economy but was not the perfect solution​
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The light from the sun has higher frequencies from one side of the sun than from the other side. What does that tell you about t
morpeh [17]

If the light from the sun has higher frequencies from one side of the sun than from the other side, it is proof that the Sun is rotating.

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8 0
1 year ago
A vase of flowers is stationary on a table. which of the following statements best explains why the vase is stationary?
goldenfox [79]
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7 0
3 years ago
Two mirrors are touching so they have an angle of 35.4 degrees with one another. A light ray is incident on the first at an angl
alexandr1967 [171]

Answer:

54.6°

Explanation:

From law of reflection i=r.

So, construct the reflected ray at 55.7°degrees from the normal and let it fall on the other mirror.  

Now draw the second normal at the point of incidence and again measure the angle of incidence, and draw the angle of reflection.

If you consider triangle AOB, one angle is ∠AOB=90°

 and ∠OAB is 54.6°

 

From angle sum property third angle ie ∠ABO=180°-90°-54.6°=35.4°

 

So, the second incident angle will be 54.6°

Hence, the second reflected angle will be 54.6 degrees.

8 0
4 years ago
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