Answer:
The solution and the explanation are in the Explanation section.
Explanation:
According to the diagram that is in the attached image, the EFFORT force at point A and the load is at O point. The torque due to weight is:
TA = W * (a * cosθ)
The torque due to effort at C point is:
TC = E * (b * cosθ)
The net torque is equal to 0, we have:
Tnet = 0
W * (a * cosθ) - E * (b * cosθ) = 0

From the figure, you can observe that a/b < 1, thus E < W
 
        
             
        
        
        
Answer:

Explanation:
We can use the following kinematics equations to solve this problem:
 .
.
Using the first one to solve for acceleration: 
 .
.
Now we can use the second equation to solve for the distance travelled by the airplane:
 (three significant figures).
(three significant figures).
 
        
             
        
        
        
Answer:
First law of motion
Explanation:
I say this because this example shows how an object is staying persistent unless it's compled to change
(not sure)