Rajah menunjukkan tiga spring ynag serupa dengan panjang asal 16.0 cm.
What is the length of Y?
Berapakah panjang Y?
A 2.0 cm
B 6.0 cm
C 10.0 cm
D 13.0 cm
Hooke Law
F=kx
16.0 cm-14.0 cm = 2.0 cm
x=2.0 cm
F=kx
F=k(2)
100 g=2k
(100/2)=k
k=50.0 cm
2 springs,
(300 g /2)=150 g
F=kx
150=(50)x
x=3.0 cm
y=16.0-3.0 cm = 13.0 cm