Question #280633

on a hypothetical planet X with an unknown value for g, the period of a swinging pendulum with a string length of .75 meters is a 1.8 s calculate the value of "g" on plnaet X



1
Expert's answer
2021-12-17T11:50:50-0500

The period of the pendulum is given as follows:


T=2πLgT = 2\pi \sqrt{\dfrac{L}{g}}

where L=0.75mL = 0.75m is its length. Thus, expressing gg and substituting T=1.8sT = 1.8s, find:


g=4π2LT2=4π20.75m(1.8s)29.1m/s2g = \dfrac{4\pi^2L}{T^2} =\dfrac{4\pi^2\cdot 0.75m}{(1.8s)^2} \approx 9.1m/s^2

Answer. 9.1 m/s^2.


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