Answer:
Magnitude of the acceleration due to gravity on the planet = 2.34 m/s²
Explanation:
Time period of simple pendulum is given by
     [tex]T=2\pi\sqrt{\frac{l}{g}}[/tex], l is the length of pendulum, g is acceleration due to gravity value.
We can solve acceleration due to gravity as
      [tex]g=\frac{4\pi^2l}{T^2}[/tex]
Here
 Length of pendulum = 1.20 m
 Pendulum executes simple harmonic motion and makes 100 complete oscillations in 450 s.
 Period, [tex]T=\frac{450}{100}=4.5s[/tex]
Substituting
     [tex]g=\frac{4\pi^2\times 1.2}{4.5^2}=2.34m/s^2[/tex]
Magnitude of the acceleration due to gravity on the planet = 2.34 m/s²
