Grade Physics Extra Practice Booklet Term 3 Finals Concept 29: Define the gravit

Question

Grade Physics Extra Practice Booklet Term 3 Finals Concept 29: Define the gravitational field of the earth Define the gravitational field of the Earth The gravitational field of the Earth is the region of space around the Earth in which any other _____ will feel a pull Concept 30: Know that the gravitational field strength and acceleration due to gravity are equal The Earth pulls all objects with a constant force per unit mass', g, called the of the ________ _______ _________ of the Earth. The unit for force is the ________, _________ The unit for mass the _________, _________ Since gravitational field strength is force per unit mass', the unit for gravitational field strength is therefore _______. What is the magnitude of the gravitational field strength of the Earth? __________ What force will act on a mass of 12 kg placed on the Earth's surface (what is the weight of the 12 kg mars)? Given g = 6.5 N/kg then what is the mass of an object that weights 130 N on Mars? An object of mass 900 kg weighs 2250 N on the planet Mercury. What is g_Mercury?

Explanation / Answer

49. Gravitational field is a model which is used to determine the influence that a huge body(here Earth), extends into the space around itself which produces a force on another huge body

50. Object with mass

51. acceleration due to gravity

52. Newton(N)

kg

N/kg

53) 9.8 N/kg

54) Force = 12*9.8 = 117.6 N

55) Mass of object = 130/6.5 = 20kg'

56)gMercury = 2250/900 = 2.5 N/kg

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