Answer:
the spring will stretch 10 cm
Explanation:
With the 40 N mass hanging from it, the restorative force of the spring will equal 40 N.
Let's recall that the restorative force "F" of the spring has a magnitude proportional to the displacement "x" from its relax position as per the following formula:
where "k" is the spring's constant.
We can from this expression find the value of the displacement "x" just solving for it in the equation:
Such displacement is equivalent to 10 cm.
Answer:
The wavelength of the interfering waves is 3.14 meters.
Explanation:
Given that,
The equation of standing wave that is formed by interfering two harmonic waves (travelling opposite direction) is given by :
........(1)
The general equation of standing wave is given by :
..............(2)
On comparing equation (1) and (2), we get :
k = 2
We know that,
So, the wavelength of the interfering wave is 3.14 meters. Hence, this is the required solution.