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
aleksandrvk [35]
3 years ago
14

An empty elevator has a mass of 722 kg. It moves between floors at a maximum speed of 6.00 m/s. The elevator is stopped on the 2

0th floor of the building when someone pushes the call button in the lobby (the first floor). Assuming that it takes 15.25 meters for the elevator to reach its maximum speed, and assuming constant acceleration, calculate the tension in the cable as the elevator car begins to descend (during the period of constant acceleration). Take the acceleration due to gravity to be 9.81 m/s2. Show your work.
Physics
1 answer:
FinnZ [79.3K]3 years ago
7 0

Answer:

Explanation:

The lift is going down with acceleration

Initial speed u = 0

Final speed v = 6 m/s

distance s = 15.25 m

acceleration a = ?

v² = u² + 2 a s

6² = 0 + 2 x a x 15.25

a = 1.18 m /s²

Elevator is going down with acceleration  .

mg - T = ma where T is tension in the cable .

722 x 9.8 - T = 722 x 1.18

7075.6 - T = 851.96

T = 6223.64 N .

You might be interested in
Water has a very high specific heat capacity when compared to most other common materials. In fact, ethyl alcohol has a specific
AveGali [126]

Answer:

Lead, Ethyl alcohol and water.

Explanation:

Specific heat capacity of a substance can be define as the quantity of heat that is absorbed by a substance needed to change the temperature of a unit mass of one kilogram of the substance by one kelvin

5 0
3 years ago
How much soil is in a 5 cm to 9 cm deep hole?
vlabodo [156]
There is no soil in a hole

;)
6 0
3 years ago
A crow is flying horizontally with a constant speed of 2.70 m/s when it releases a clam from its beak. the clam lands on the roc
vovangra [49]

Part a)

in horizontal direction there is no gravity or no other acceleration

so in horizontal direction the speed of clam will remain same

v_x = 2.70 m/s

Part b)

In vertical direction we can use kinematics

v_f = v_i + at

v_f = 0 + 2.1 * 9.8

v_f = 20.6 m/s

part c)

if the speed of crow will be increased then the horizontal speed of the clam will also increase but there is no change in the vertical speed

5 0
2 years ago
Why might the term red hot be misleading? (relating to stars)
Allushta [10]

red hot is hot, but other colours are even hotter. stars may be hotter than red hot.

there is also something calle the red shift.

3 0
2 years ago
What is the month of winter
Tanya [424]
Period of months where the weather is the coldest and the days are the shortest.
5 0
2 years ago
Read 2 more answers
Other questions:
  • Which force in nature is believed to have formed second?
    10·1 answer
  • A cat is on a 1.5 m high table and jumps at a 37 angle with a speed of 10 m/s. how far horizontally from the edge of the table d
    11·1 answer
  • A computer monitor accelerates electrons and directs them to the screen in order to create an image. If the accelerating plates
    8·1 answer
  • A planet in our solar system is located far from the sun describe the size and composition of the planet
    9·2 answers
  • Give two advantages and disadvantages each of renewable and non renewable sources of energy
    14·2 answers
  • Why is it important for a muscle to be attached to a fixed origin at one end and a moving insertion at the other? Discuss how th
    14·1 answer
  • How do satellites stay in orbit?
    11·2 answers
  • Find the time taken for the journey of a car which covers a distance of 2000m in 5 m/s
    13·1 answer
  • A rock falls from a cliff and hits the ground at a velocity of 28m/s. How long did it take to fall?
    9·1 answer
  • Which forces are contact forces give one example of each​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!