A planet follows a nearly circular orbit (dashed curve) about the sun. The plane

Question

A planet follows a nearly circular orbit (dashed curve) about the sun. The planet has mass 4 A planet follows a nearly circular orbit (dashed curve) about the sun. The planet has mass 4 A planet follows a nearly circular orbit (dashed curve) about the sun. The planet has mass 4 1024 kg and the sun has mass 1.99 1030kg. They are separated, center to center, by 5.0 108 km. What is the magnitude of the gravitational force acting on the planet due to the sun? (Use scientific notation with three sig figures, e.g. 1.23E04) F= At the moment shown in the above figure of the planet and sun, what is the direction of the gravitational force acting on the planet? Consider a space probe with mass launched from the planet toward the sun. When the probe is exactly halfway between the planet and the sun along the line connecting them, what is the direction of the net gravitational force acting on the probe? The force is toward the sun The force is toward the earth. There is no net force because neither the sun nor the earth attracts the probe gravitationally at the midpoint. There is no net force because the gravitational attractions on the probe due to the sun and the earth are equal in size but point in opposite directions, so they cancel each other out. If the planet has a radius of 3 times 103 km, calculate the weight of an object with m=10.0 kg sitting on the surface of the planet. W=

Explanation / Answer

To solve these problems, you can use Newton's law of universe gravitation attraction (two bodies with mass will experience an attractive force between them)

i.e. F = (G*m1*m2)/r^2 where m1 and m2 denote the masses of the bodies and r is the radius separating them. G = constant = 6.674

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