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3. on the planet newtonia a simple pendulum having a bob...

# Question: on the planet newtonia a simple pendulum having a bob...

###### Question details

On the planet Newtonia, a simple pendulum having a bob with a mass of 1.31 kg and a length of 188.2 cm takes 1.58 s , when released from rest, to swing through an angle of

11.5 , where it again has zero speed. The circumference of Newtonia is measured to be 5.14×104 km .

What is the mass of the planet Newtonia? (in kg)