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
Makovka662 [10]
3 years ago
15

Can someone help me solve this... Please!​

Mathematics
1 answer:
CaHeK987 [17]3 years ago
4 0

Answer:

Step-by-step explanation:

At a building site, an iron girder of mass 400 kg is suspended from a crane by a steel cable. Assume that the cable has a circular cross-section of diameter 24 mm.

a.What is the tensile force in newtons on the cable given that force = mass × g (where the acceleration due to gravity, g = 9.8 m s−2). Ignore the mass of the cable.(2 marks)

b.Calculate the cross-sectional area of the cable in square metres.(3 marks)

c.Show that the stress on the cable is 8.67 × 106 N m−2. Again ignore the mass of the cable.(3 marks)

d.If the Young’s modulus of the steel cable is 200 × 109 N m−2, calculate the strain in the cable.(3 marks)

e.When it is loaded with the iron girder, the steel cable stretches by 0.78 mm. Calculate what the original length of the steel cable was (i.e. its length prior to loading).(4 marks)

TOTAL: 15 marks

show working

You might be interested in
Find all solutions in the region [0,2pi) for the equation cos^2(2x)-sin^2(2x)=0
Lynna [10]
\cos^{2}(2x)-\sin^{2}(2x)=0
\rightarrow \sin^{2}(2x)=\cos^{2}(2x)
\rightarrow \frac{\sin^{2}(2x)}{\cos^{2}(2x)}=1
\rightarrow \tan^{2}(2x)=1
\rightarrow \tan(2x)=\pm 1

2x can range anywhere in [0, 4\pi)
So:
\rightarrow 2x=\frac{\pi}{4}, \frac{3\pi}{4}, \frac{5\pi}{4}, \frac{7\pi}{4}, \frac{9\pi}{4}, \frac{11\pi}{4}, \frac{13\pi}{4}, \frac{15\pi}{4}
\rightarrow x=\frac{\pi}{8}, \frac{3\pi}{8}, \frac{5\pi}{8}, \frac{7\pi}{8}, \frac{9\pi}{8}, \frac{11\pi}{8}, \frac{13\pi}{8}, \frac{15\pi}{8}
4 0
3 years ago
Equation seven times a number is 28
allochka39001 [22]
4 is the answer 7x4=28
8 0
3 years ago
Read 2 more answers
Kevin has $1,427 in a savings account.His brother has saved an amount with the 4 that is 1/10 the value of the 4 in Kevin's acco
Contact [7]
The answers would be $142.7 <span />
8 0
3 years ago
Write 2,046,708 in words​
Len [333]
Two million forty-six thousand seven hundred and eight.
5 0
3 years ago
Read 2 more answers
a 4inch wide by 6inch long picture is placed on a solid mat that forms a frame around it. the mat is 8 inches long. the mat and
gulaghasi [49]
The area of the mat is 42.67 inches^2 or 42 and 2/3 in^2
7 0
2 years ago
Other questions:
  • fair dice is rolled. Work out the probability of getting a number more than 3. Give your answer in the simplest form
    7·1 answer
  • Please helpp ASAP 2 5 pts + brainliest for best/right answer
    8·1 answer
  • What is 2226 ÷ 53?????
    13·2 answers
  • What is th rate equivalent to an annual rate of 20% with monthly capitalization​
    8·1 answer
  • Evaluate the expression.
    8·1 answer
  • Find the slope of the line passing through the points (-7, -4) and (8,8).
    11·2 answers
  • PLEASE HELP
    9·2 answers
  • Somebody please help me with this question
    11·2 answers
  • Number 13. Multiply please.
    9·1 answer
  • 100pts!! Please help me graph this piecewise function!!!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!