Answer:
12.5
Step-by-step explanation:
12x6 is 12 + 5 meters = 12.5m
Answer:
The only one that applies is g = 6 because 102 divided by 6 is 17 which is less that 33 and all the other answers are greater that 33.
Hope this helps!
Step-by-step explanation:
Answer:
4Joules
Step-by-step explanation:
According to Hooke's law which states that extension of an elastic material is directly proportional to the applied force provide that the elastic limit is not exceeded. Mathematically,
F = ke where
F is the applied force
K is the elastic constant
e is the extension
If a spring exerts a force of 6 N when stretched 3 m beyond its natural length, its elastic constant 'k'
can be gotten using k = f/e where
F = 6N, e = 3m
K = 6N/3m
K = 2N/m
Work done on an elastic string is calculated using 1/2ke².
If the spring is stretched 2 m beyond its natural length, the work done on the spring will be;
1/2× 2× (2)²
= 4Joules
70-40= 30
30/2 = 15
40/2= 20
15 x 20 = 300
