1.25 Answers
1.25 Principle of Moments Questions
29 September 2010
14:37
|
Size of load (tonnes) |
Size of load (N) |
Maximum length of jib (m) |
Moment (load x length) |
|
10 |
100,000 |
12 |
1,200,000 |
|
20 |
200,000 |
6 |
1,200,000 |
|
30 |
300,000 |
4 |
1,200,000 |
|
40 |
400,000 |
3 |
1,200,000 |
5b) All of the moments are the same, this is because the highest moment the crane can extend to is 1,200,000.
c. M= F x d, M=1,200,000, d=24m, F= 1,200,000/24, F=50,000N
4a) X=20N
b) Y=4N
c) Z=1N
