an elevator suspended by a vertical cable is moving downward but slowing down. the tension in the cable must be:

Answers

Answer 1

Answer:

F = M a is the vector equation involved

F = T - M g      are the forces acting on the elevator   (scalar equation)

T - M g = M a

T = M (a + g)    remember this a scalar

If a is slowing down then it must have a positive acceleration upwards

Therefor the tension in the cable must be greater than zero

When the tension increases to M g, a has increased to zero

For a to be zero, no acceleration, T = M g


Related Questions

Please please help me

Answers

Answer:

amitude doesnt change

Explanation:

A force of 10 N works on a ball over a distance of 5 m. The force is perpendicular to the displacement of the ball. What is the total work done by the force?​

Answers

Since the force is perpendicular to the displacement of the ball, the total work done by the force is 50 Nm.

Given the following data:

Force = 10 NewtonDistance = 5 meters

To find the total work done by the force:

The work done by an object is the product of the perpendicular force acting on the object and the distance it covers.

Mathematically, work done is given by the formula:

[tex]Work\;done = Force[/tex] × [tex]distance[/tex]

Substituting the given parameters into the formula, we have;

[tex]Work\;done = 10[/tex] × [tex]5[/tex]

Work done = 50 Nm.

Read more: https://brainly.com/question/22599382

can someone help me, please? ​

Answers

Answer:

what to do

Explanation:

what is this I did not understand


A car, which started at rest, took 5.8 seconds to reach a velocity of 2km/s. What is
the average velocity?

Answers

Answer:

1 m/s

Explanation:

Use SUVAT and the equations of motion:

S

U = 0 km/s since it started at rest.

V = 2 km/s

A

T = 5.8 seconds

Equation used: [tex]v=\frac{v+u}{2}[/tex]

[tex]v=\frac{2+0}{2}[/tex]

v=1

Use the Pythagorean Theorem to find the velocity of an airplane traveling north at 100 kilometers per hour. It is also flying through a wind that is blowing west at 30 kilometers per hour.

Answers

Answer:

I'm not sure

Explanation:

HAVE FAITH IN UR SELF AND YOU WILL GETT ITTTT HOPEFULLAYY

The half-life of Radon-222 is 3.8 days. Calculate how long a 48g sample of radon will last before it contains only 3g of radon.

PLS HELP FOR MY GCSE REVISION! ill give brainliest

Answers

Answer:

48 / 3 = 16

1 / 16 of the original amount is to remain

4 half lives = 1/2 * 1/2 * 1/2 * 1/2 = 1/16

After 4 half lives 1/16 of the original amount is present

4 half-lives * 3.8 days / half-life = 15.2 days

After 15.2 days only 3 g will be present

Chọn câu trả lời đúng Một ôtô đang chạy thẳng đều với vận tốc 36km/h bỗng tăng ga chuyển động nhanh dần đều .Biết rằng sau khi chạy được quãng đường 1km thì ôtô đạt vận tốc 108km/h .Gia tốc của xe là
A. 1mm/s2 B. 0.001cm/s2 C. 0,4 m/s2 D. 1m/s2

Answers

Answer:

yploi bonjour badam koi dori ka

Can someone please give me the answers to this? ... please ...

Answers

Answer:

See below:

Explanation:

Motion is what makes something move, there are different types and different ways to make motion, motion also comes with forces.

To figure out the motion type, we can simply see the wording of the sentence:

1) Air Resistance is the motion of air, it would be pushing up to stop the fall a bit.

2) We can neglect the resistance by being straight so we have to deal with less of it.

3) This motion is not in motion as nothing happened/happening.

4) This is friction as the friction of the ground and turning the car is slowing it down.

5) The motion is going in any direction as it depends on the start of the asteroid and its starting angle.

6) If its not moving; there is no motion.

7) We can neglect it by going on a 0 degree slope.

8) We simply have to do nothing as its already a law and will happen naturally.

9) The motion is basic motion with some friction due to its scenario.

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What is qualitative research?

Answers

Quality research most commonly refers to the scientific. process encompassing all aspects of study design; in. particular, it pertains to the judgment regarding the match. between the methods and questions, selection of subjects, measurement of outcomes, and protection against.

Answer:

Research is "creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization, and analysis of information to increase understanding of a topic or issue. A research project may be an expansion on past work in the field.

Explanation:

Question 1 of 10
This graph shows how the potential energy of a reaction system changes
over time. Which statement is true for this system?
B
Potential energy
С
Reaction progress
O A. The potential energy of the reactants is greater than the potential
energy of the products
OB. The height of the curve at point A represents the activation energy
O C. The height of the curve at point B represents the activation energy.
O D. The potential energy of the products is greater than the potential
energy of the reactants.

Answers

The potential energy of the reactants is greater than the potential energy of the products.

What is potential energy of reaction?

Potential energy of a reaction is the stored energy that helps in breaking the bond of a compound during a chemical reaction.

The bonds present in the reactants in the reaction mixture split in the presence of the activation energy to release energy and form the product.

Thus,, option A. The potential energy of the reactants is greater than the potential energy of the products.

Learn more about potential energy here: https://brainly.com/question/1242059

#SPJ1

correct answer choice??


-----------------------------------------

Answers

Explanation:

magnitude=force/charge

=(2.6N)/(1.5 ×10^-6)

=1.7 × 10^6 N/C

the full range of electromagnetic energy is called the

Answers

Answer: the electromagnetic spectrum

Explanation:

The full range of frequencies of electromagnetic radiation is called the electromagnetic spectrum. From longest to shortest wavelengths, it includes radio waves, microwaves, infrared light, visible light, ultraviolet light, X rays, and gamma rays.

Hope I have helped, and have a good day!!!

Arwan finds a piece of quartz while hiking in the mountains. When he returns to school, he takes it to his science teacher. She helps him determine the mass to be 788.9 g. She also tells Arwan that the density of quartz is 2.6 .

What is the volume of Arwan’s piece of quartz?

Answers

Answer:

303.42

Explanation:

cause i got it right on my question

Please help I'll mark brainliest NO LINKS

Answers

Answer:

B

Explanation:

Answer:

B

Explanation:

i just did this question last week

Analyze data table #1 and then create a line graph comparing speed and time.

Answers

I don’t know what the answer is to the question but if I don’t answer the question I will be mad at the

is it possible for humans to use there extra eyelid?

Answers

Answer:

Known as the “plica semilunaris,” it's much more prominent in birds and a few mammals, and functions like a windshield wiper to keep dust and debris out of their eyes. But in humans, it doesn't work. It's vestigial, meaning it no longer serves its original purpose.

Explanation:

Hope it helps

NEED HELP!!!!! 11 POINTS!!!

Troy has decided that he wants to be healthier. He has been doing a pretty good job sticking to the exercise routine that he designed. However, he tends to eat a lot of junk food. He assumes that if he is exercising, diet is not really that important. What is the BEST response to Troy’s assumption?

A.
If he eliminates junk food, he will be eating healthy.

B.
As long as he is not overweight, diet does not matter.

C.
If he exercises a lot then it does not matter what he eats.

D.
Exercise and attention to diet need to go together to build health.

PLEASE NO LINKS

Answers

D. Exercise and attention to diet need to go together to build health.
It would be D because if you’re losing weight then you need to eat less calories than you burn in a day so then your body has to burn fat.

write the energy change when charging the battery of a mobile phone​

Answers

Answer:

Chemical energy

Explanation:

Because most of the modern mobile batteries are lithium ion batteries where the electricity is stored by the chemical changes in the ionic structure of the battery.

Answer:

to make an energy the electricity provide the energy charging when use

How do you determined the atomic mass and mass number of an atom?

Answers

Answer:

For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.

Explanation:

Equations for power
P=
W=
T=

Answers

Answer:

w= f*x (x is distance) (f is force)

t= time

P= w/t

Answer this question fast please​

Answers

Answer:

A. Strain

Explanation:

(no explanation)

what is acceleration of gravity

Answers

Answer:

Verified answer

Explanation:

Make me as brain liest plz

Please heeelllllppppppppp

Answers

Answer:They repel each other

Step by Step Explanation :

If you bring a positive object near the electroscope, it will attract the electrons toward the terminal. The leaves will move away from each other. You can also use this process with a positive object to charge the electroscope.

Hope this helped!

Hope U have a great day!

How does noise affect a signal?


A) It causes the signal to deteriorate.


B) It amplifies the signal.


C) It allows the signal to travel further.


D) It changes the signal as it moves from one medium to another.

Answers

Answer:

A - It causes the signal to deteriorate  

heeelllpppp pleaaaaaaaase

Answers

option d

plz give brainliest

The weight of a boy with a mass of 50 kg is
N. (Estimate 10
m/s2 forg)

Answers

Answer:

500N up........

.......

5
2. A truck took 4 hours to complete a journey. At the first 2h,
it travelled at an average speed of 70 km/h. For the rest of
the journey, it travelled at an average speed of 80 km/h.
What was the total distance of the journey?

Answers

Answer:

300km

Explanation:

we use the formula s=d/t and solve for d.

d=st

s1=70km/h

s2=80km/h

t=2h

total d= (ts1)+(ts2)

=2(70)+2(80)

=300km

Một người tác dụng lên mặt sàn một áp suất 1,7.104N/m2. Diện tích của bàn chân tiếp xúc với mặt sàn là 0,03m2. Trọng lượng của người đó là.

Answers

Answer:

Hi, can you ask it in english only?

Pleaseee helpppp meeeeeee I will give pountsss

Answers

Answer:

8.

m= 0. 113 kg

W = 1.1074 N

g = 9.8 m/ s²

9.

m= 870 kg

W = 8526 N

g = 9.8 m/s²

10.

a) weight on earth:

weight = mass × acceleration due to gravity (g)

g on earth = 9.8 m/s²

W = 75 × 9.8

W = 735 N

b) g on Mars

285 = 75 × g

g = 285/ 75

g = 3.8 m/ s²

A water bottle contains 15.0 ounces of water. A person drinks 0.5 ounces per minute. How many hours will it take to drink all of the water?

Answers

0.5 hours (30 mins)
15÷ 0.5= 30
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