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
(a) 5.66 m/s
The flow rate of the water in the pipe is given by
where
Q is the flow rate
A is the cross-sectional area of the pipe
v is the speed of the water
Here we have
the radius of the pipe is
r = 0.260 m
So the cross-sectional area is
So we can re-arrange the equation to find the speed of the water:
(b) 0.326 m
The flow rate along the pipe is conserved, so we can write:
where we have
and where is the cross-sectional area of the pipe at the second point.
Solving for A2,
And finally we can find the radius of the pipe at that point: