Out of a pair of identical springs of force constants, 240Nm-1 one is compressed by 10 cm and the other is stretched by 10 cm. W
2 answers:
Explanation:
<h3>Answer is zero</h3>The stored potential energy of a spring is independent whether it is compressed or expanded
This doesn't depend upon movement in left from natural length or right.
This is because the spring always does negative work and opposite to the direction of motion.
<h3>Mathematically AlsoP=You might be interested in
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:
#LearnwithBrainly
Answer:
Explanation:
Maximum height reached by the ball after being popped by the bat is given as
now we know by energy conservation final speed of the ball after being hit by the bat is given as
now the change in momentum of the ball is given as
now force is given as rate of change in momentum
so magnitude of the force is given as