How much work is needed to stretch this spring a distance of 5. 0 cm , starting with it unstretched?
1 answer:
The work done by the unstretched spring is 5 J.
<h3>What is the Hooke's law?</h3>Hooke's law states that the extension of a given material is directly proportional to the force applied as log as the elastic limit is not exceeded. Thus we have to know that; F = Ke
F = force applied
K = force constant
e = extension
Using the graph;
K = F/e
F = 200N
e = 5 cm or 5 * 10^-2 m
K = 200N/ 5 * 10^-2 m
K = 4000 N/m
Now;
Work = 1/2Ke^2
Work = 0.5 * 4000 N/m * (5 * 10^-2 m)^2
Work = 5 J
Learn more about Hooke's law:brainly.com/question/13348278
#SPJ1
You might be interested in
Answer:
Explanation:
According to the 1st law of thermodynamics, we have:
where
is the change in internal energy of the system
Q is the heat absorbed by the system
W is the work done by the system
We also know the change in internal energy of a system only depends on the change in temperature:
Since here the temperature of the air remains constant, the change in internal energy is zero:
So the first equation becomes
The work done by the system here is
Therefore, the heat added to the system is
Answer:
Explanation:
The acceleration due to gravity is in the downward direction. This means that it will oppose the upward motion of the stone. This will cause the stone to stop and begin to fall. Therefore, the sign of the final velocity is negative, since it is in the downward direction. The final velocity is given by: