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
AysviL [449]
3 years ago
9

A miners' cage of mass 420 kg contains 3 miners of total mass 280 kg. The cage

Mathematics
1 answer:
svp [43]3 years ago
8 0

Answer:

5817 Newtons.

Step-by-step explanation:

Total mass of the cage + the miners = 700 Kg which is a downward force of  700g N.

The net downward force = 700g - T where T is the tension (force) in the cable. The g = acceleration due to gravity = 9.81 m s-2.

We  calculate the  acceleration of the cage by using an equation of motion:

Distance = ut + 1/2 a t^2     where u = initial velocity , t = time and a = acceleration:

75 = 0(t) + 1/2 a (10^2)

50a =  75

a = 1.5 m s-2.

So using Newtons second law of motion

Force = mass * acceleration:

700*9.81 - T = 700 * 1.5

T = 700 * 9.81 - 700*1.5

= 5817 N.

You might be interested in
If someone can help pls need soon
Annette [7]

Answer:

Step-by-step explanation:

7 0
2 years ago
Two adjacent sides of a parallelogram are 6mm and 10mm respectively, and they form an angle measuring 60. Find the area of the p
Snowcat [4.5K]

Answer:

51.96 mm² approximately

Step-by-step explanation:

the first thing you should know is that the area of a rectangle is base*height sin of (

the included angle i.e

Arectangle= bh sin90° since all angles of a rectangle are equal then the included angle is 90°

<em>Arectangle= bh sin90° since sin90 is 1 we simply use the equation bh because multiplying bh by one is bh. bearing this in mind , the area of the parallelogram can be calculated as:</em>

Aparallelogram= bh sin of sin of the included angle

Aparallelogram= bh sin of sin of the included angle Aparallelogram=6mm*10mm sin 60°

Aparallelogram= bh sin of sin of the included angle Aparallelogram=6mm*10mm sin 60°Aparallelogram=60mm² * 0.866

Aparallelogram= bh sin of sin of the included angle Aparallelogram=6mm*10mm sin 60°Aparallelogram=60mm² * 0.866Aparallelogram=51.96 mm² approximately

4 0
2 years ago
If we sub (3x-5y) from (6x +8y)then the result is plz repy​
konstantin123 [22]

Answer:

3x + 13y

Explanation:

6x + 8y − (3x − 5y)

Distribute the Negative Sign

6x + 8y + −1(3x − 5y)

6x + 8y + −1(3x) + −1(−5y)

6x + 8y + −3x + 5y

Combine Like Terms

6x + 8y + −3x + 5y

(6x + −3x) + (8y + 5y)

= 3x + 13y

8 0
3 years ago
Read 2 more answers
Find the area of a circle with radius r = 6 cm
BlackZzzverrR [31]
The formula to find the area of a circle is pi x radius^2.

pi = 3.14 (in this case)
radius = 6

6^2 (6 x 6) = 36

36 x 3.14 (radius^2 x pi) = 113.04

So, the area of a circle with radius 6 cm is 113.04 cm.
5 0
2 years ago
Which is an advantage of using a checking account? You can pay only in cash, which can help you avoid splurging. You can pay by
Yuki888 [10]
You can pay in check
8 0
2 years ago
Read 2 more answers
Other questions:
  • What is y=x by a vertcal stretch of 5
    9·1 answer
  • I need help on this.
    5·2 answers
  • Plz help me im stuck
    14·1 answer
  • Events A and B are mutually exclusive. Also, P(A) = 0.12 and P(B) = 0.25.
    6·1 answer
  • Write the word form and the expanded form for each <br><br> 1.7 &amp; 5.62
    14·2 answers
  • There are 20 bicycles and 10 cars parked in the parking lot. Each bicycle had two wheels and each car had four wheels. How many
    7·2 answers
  • Question 1 of 5
    15·2 answers
  • !HELP! Find The Exponential Equations For The Following Graph Below
    6·2 answers
  • Richard wants to purchase a Jeep. The purchase price of the Jeep is $ 42 , 000. The dealership will allow him to pay cash or fin
    5·1 answer
  • What is the value of the expression below? (7123? O A7 O B. 2 O c. O D. 14
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!