In order to draw the free body diagram, first let's calculate the friction force acting on the crate:
Since the friction force is greater than the force applied, the crate will not move, and the friction force will be equal to the force applied.
The weight force is equal to 40 * 9.8 = 392 N.
So, drawing the diagram, we have:
Answer:
Yes it is possible because 3.33 is greater than 2.
Explanation:
Given that,
1 liter = 1000 milliliters
Suppose water is leaking from the tank at a rate that is greater than 2 milliliters per second.
We need to change the unit in ml/s
Hence, Yes it is possible because 3.33 is greater than 2.
Answer:
Final speed of the box after it has moved to x = 10 is given as
v = 3.35 m/s
Explanation:
As we know by work energy theorem that work done by all the forces is equal to the change in its kinetic energy
Here work done by external force + work done by friction = change in kinetic energy of the box
so we have
The graphs of the acceleration as a function of mass and of the acceleration as a function of force are in attachment.
Explanation:
To answer both parts of the question, we refer to Newton's second law, which states that:
where
F is the net force on an object
m is the mass of the object
a is its acceleration
a)
To answer this part, we re-arrange the previous equation as follows:
Therefore, we notice that if a constant force is applied, the acceleration is inversely proportional to the mass of the object:
this means that if the mass increases, the acceleration decreases, and if the mass decreases, the acceleration increases.
In a graph of acceleration vs mass, the curve representing this relationship would be a hyperbole. The graph is shown as the first graph in the attached picture.
b)
As before, we re-arrange the previous equation as follows:
Here we notice that if the object has a constant mass, the acceleration is directly proportional to the force applied on the object:
this means that when the force increases, the acceleration increases, and when the force decreases, the acceleration decreases.
In a graph of acceleration vs force, the curve representing this relationship would be a straight line, as shown in the second graph in the attached picture.
Learn more about Newton's second law of motion here:
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