Your spaceship lands on an unknown planet. to determine the characteristics of this planet, you drop a 1.50 kg wrench from 5.50 m above the ground and measure that it hits the ground 0.811 s later. you also do enough surveying to determine that the circumference of the planet is 6.28*104 km. part a what is the mass of the planet, in kilograms?

Question

Dakota Frederick

Physics

29 August, 08:09

Your spaceship lands on an unknown planet. to determine the characteristics of this planet, you drop a 1.50 kg wrench from 5.50 m above the ground and measure that it hits the ground 0.811 s later. you also do enough surveying to determine that the circumference of the planet is 6.28*104 km. part a what is the mass of the planet, in kilograms?

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Answers (1)

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Maddison · Answer 1

1. calculate the value of acceleration that objects gains in that period of time

•calculating acceleration

5.50 = 1/2at^2

5.50*2/t^2 = a

11.00/0.657 = a

16.74=a

now you got the acceleration

2. you have laws of gravitation for that

g = Gm/r^2

where g is the acceleration value

16.74 = 6.754*10^-11 * m / 6.28*10^4

105.14*10^4 / 6.754*10-11 = m

15.567*10^15 = m

that would be the mass of the planet ...