2ACEC941-2DCE-4280-B613-A22062DC9B57.jpeg - Unit 3 Problem Set Key Ranking Tasks Section RT I I wo asteroids with masses of w and 3m exert gravitational

2ACEC941-2DCE-4280-B613-A22062DC9B57.jpeg - Unit 3 Problem...

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Unformatted text preview: Unit 3 Problem Set Key Ranking Tasks Section: RT I. I wo asteroids with masses of w and 3m exert gravitational forces on each other. A student contends that the forces will be in different directions and of different magnitudes as shown below. Planet A Planet B What's wrong. if anything, with this student's contention? If something is wrong. identify it and explain how to correct it. If this student's contention is correct. explain why. Answer: The forces are attractive so the directions should be reversed and the forces should be equal as required by Newton's Third Law. Planet A Planet B RT 2. Three objects each with a mass of M exert gravitational forces on each other, Which of the arrows below shows the direction of the net force on mass IT B (iv) (v) None of these OC Explain your reasoning Answer (a) vector addition of the force ou B by A (which is directed horizontally to the left) and the force on $ by C (which is directed toward the bottom of the page or down) results in a force 45" down to the left RT 3, Object A has twice the mass of Object B. Identify the pair of force vectors (the arrows) that correctly compare the gravitational force exerted on A by B with the gravitational force exerted on B by A. Gravitational force on A by B Gravitational force on B by A (b) (d) (el Explain your reasoning. Answer: (by The forces must be attractive, because the gravitational force is always an attractive force. Newton's Third Law requires that the magnitude of the forces be the same....
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