JAMB - Physics (1982 - No. 33)
A 10g mass placed on the pan of a spring balance causes an extension of 5cm. If a 15g mass is placed on the pan of the same spring balance, the extension is
3.3cm
6.5cm
7.5cm
10.8cm
15.0cm
Giải thích
F \(\alpha\) e and m \(\alpha\) F
\(\frac{m_1}{e_1}\) = \(\frac{m_2}{e_2}\)
\(\frac{10}{5}\) = \(\frac{15}{e_2}\)
e2 = 7.5cm
\(\frac{m_1}{e_1}\) = \(\frac{m_2}{e_2}\)
\(\frac{10}{5}\) = \(\frac{15}{e_2}\)
e2 = 7.5cm