After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 52.0 cm . The explorer finds that the pendulum completes 104 full swing cycles in a time of 141 s .
What is the magnitude of the gravitational acceleration on this planet?
gplanet= m/s2
Solution)
We know, g = (4π^2*L)/P^2
Given, pendulum completes 104 full swings in 141 s, so
P = 104/141s
Given that L = 52 cm
g = (4π^2*L)/P^2
= [4π^2*(0.52 m)]/(141/104 s)^2
= 16.37 m/s^2 (Ans)
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