1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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.
You might be interested in
A sphere of mass 40kg is attaracted by a second sphere of mass 15 kg when their centers are 20 cm apart with a force of 0.1mg-wt
ser-zykov [4K]
<span>gravitational force = 0.1 mg-wt. = 0.1 * 10^-6 * 9.8 N = Gm1m2/r^2
 m1 = 40 kg m2 =15 kg and r = 0.2 m
 Put in and find G</span>
3 0
3 years ago
when a bucket full of water is pulled of from a well,in which condition: either inside or outside the water is it difficult to l
julsineya [31]

Answer:

Well there is gravitational force acting on the bucket ,gravitational force is a downward force so it will be acting on the bucket making it harder to lift it

6 0
3 years ago
Read 2 more answers
When the north end of earth rotation axis is pointing toward the sun which statement is true
dolphi86 [110]
Yes the statement is true 
4 0
4 years ago
A round asteroid has a surface gravity of .0288 m/s^2 if the mass of the asteroid is 1.10 x10^18 kg what is its radius
Oduvanchick [21]

Answer:

r = 50.47 x 10³ m = 50.47 km

Explanation:

Using the formula for the acceleration due to gravity:

g = \frac{Gm}{r^2}

where,

g = acceleration due to gravity on the surface of asteroid = 0.0288 m/s²

G = Universal Gravitational Constant = 6.67 x 10⁻¹¹ Nm²/kg²

m= mass of asteroid = 1.1 x 10¹⁸ kg

r = radius of asteroid = ?

Therefore,

0.0288\ m/s^2 = \frac{(6.67\ x\ 10^{-11}\ Nm^2/kg^2)(1.1\ x\ 10^{18}\ kg)}{r^2} \\\\r = \sqrt{\frac{(6.67\ x\ 10^{-11}\ Nm^2/kg^2)(1.1\ x\ 10^{18}\ kg)}{0.0288\ m/s^2}}

<u>r = 50.47 x 10³ m = 50.47 km</u>

6 0
3 years ago
If <br>1=5<br>2=10<br>3=15<br>4=20<br>what does 5 equal?
iogann1982 [59]
5 would be 25 if it continues in the same pattern
7 0
3 years ago
Other questions:
  • An inductor is connected to the terminals of a battery that has an emf of 12.0 V and negligible internal resistance. The current
    11·2 answers
  • Was the color orange named after the fruit or was the fruit named after the color ​
    12·1 answer
  • Water is flowing at a rate of 0.25 m3/s, and it is assumed that head loss in the system is 2V2/2g from the reservoir to the gage
    5·1 answer
  • On a wave, the distance between two points that have identical status is termed by ______
    5·2 answers
  • A group of hikers hear an echo 2.6 s after they shout. The temperature is 20 ◦C. How far away is the mountain that reflected the
    11·1 answer
  • A ball is dropped from somewhere above a window that is 2.00 m in height. As it falls, it is visible to a person boxing through
    9·1 answer
  • A ray of light bends upon entering a new medium. what is this phenomenon called?
    9·1 answer
  • 1) A car is moving to the right with the constant speed of 1.2 m/s. If the car starts
    15·1 answer
  • How much work is done when 300N of force is used to lift a dog 1.5m?
    15·1 answer
  • The products obtained at cathode during electrolysis depends on the nature of electrodes and electrolyte used.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!