Answer:
The spring compressed is 0.44 m.
Explanation:
Given that,
Number of person = 25
Average Mass of each person [tex]m_{p}= 25\times69 = 1725\ kg[/tex]
Mass of goat [tex]m_{g}= 3\times15 = 45\ kg[/tex]
Mass of chicken [tex]m_{c}= 5\times3 = 15\ kg[/tex]
Mass of bananas = 25 kg
If the spring constant is [tex]4\times10^{4}\ N/m[/tex]
We need to calculate the total mass
[tex]M=m_{p}+m_{g}+m_{c}+m_{b}[/tex]
Put the value in the formula
[tex]M=1725+45+15+25[/tex]
[tex]M=1810\ kg[/tex]
The weight of all these things is
[tex]W=Mg[/tex]
[tex]W=1810\times9.8[/tex]
[tex]W=17738\ N[/tex]
We need to calculate the distance
Using formula of restoring force
[tex]F=kx[/tex]
[tex]x=\dfrac{F}{k}[/tex]
Put the value into the formula
[tex]x=\dfrac{17738}{4\times10^{4}}[/tex]
[tex]x=0.44\ m[/tex]
Hence, The spring compressed is 0.44 m.