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Slide 2 Newtons Universal Law of Gravitation Practice Problems IB Physics Power Points Topic 6 SL Fields and Forces www.pedagogics.ca Slide 3 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest ii.A 50 kg student in an elevator moving downwards at 2 ms -1. iii.A 50 kg student in an elevator moving upwards at 5 ms -1. iv.A 50 kg student in an elevator accelerating upwards at 1 ms -2. v.A 50 kg student in an elevator accelerating downwards at 3 ms -2 vi.A 50 kg student in an elevator falling freely Slide 4 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest Slide 5 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest Slide 6 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest 500 N mg weight = 50 kg x 10 ms -2 = 500 N Slide 7 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest 500 N FgFg Slide 8 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest 500 N W Slide 9 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest 500 N mg FNFN 500 N Slide 10 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest ii.A 50 kg student in an elevator moving downwards at 2 ms -1. iii.A 50 kg student in an elevator moving upwards at 5 ms -1. Slide 11 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest ii.A 50 kg student in an elevator moving downwards at 2 ms -1. iii.A 50 kg student in an elevator moving upwards at 5 ms -1. 500 N mg FNFN 500 N Slide 12 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest ii.A 50 kg student in an elevator moving downwards at 2 ms -1. iii.A 50 kg student in an elevator moving upwards at 5 ms -1. iv.A 50 kg student in an elevator accelerating upwards at 1 ms -2. 500 N mg FNFN 500 N Slide 13 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest ii.A 50 kg student in an elevator moving downwards at 2 ms -1. iii.A 50 kg student in an elevator moving upwards at 5 ms -1. iv.A 50 kg student in an elevator accelerating upwards at 1 ms -2. 500 N mg FNFN ? Slide 14 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest ii.A 50 kg student in an elevator moving downwards at 2 ms -1. iii.A 50 kg student in an elevator moving upwards at 5 ms -1. iv.A 50 kg student in an elevator accelerating upwards at 1 ms -2. 500 N mg FNFN ? F net ma ma = 50 x 1 = 50 N Slide 15 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest ii.A 50 kg student in an elevator moving downwards at 2 ms -1. iii.A 50 kg student in an elevator moving upwards at 5 ms -1. iv.A 50 kg student in an elevator accelerating upwards at 1 ms -2. 500 N mg FNFN 550 N Slide 16 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest ii.A 50 kg student in an elevator moving downwards at 2 ms -1. iii.A 50 kg student in an elevator moving upwards at 5 ms -1. iv.A 50 kg student in an elevator accelerating upwards at 1 ms -2. v.A 50 kg student in an elevator accelerating downwards at 3 ms -2 500 N mg FNFN 350 N Slide 17 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 ) i.A 50 kg student in an elevator at rest ii.A 50 kg student in an elevator moving downwards at 2 ms -1. iii.A 50 kg student in an elevator moving upwards at 5 ms -1. iv.A 50 kg student in an elevator accelerating upwards at 1 ms -2. v.A 50 kg student in an elevator accelerating downwards at 3 ms -2 vi.A 50 kg student in an elevator falling freely 500 N mg Slide 18 2. Which of the following graphs shows how the gravitational force varies with the distance of separation between two objects? Slide 19 www.pedagogics.ca 3. A satellite experiences a gravitational force of 228 N at an altitude of 4.0 10 7 m above Earth. What is the mass of this satellite? 1)23 kg 2)650 kg 3)910 kg 4)1 200 kg Slide 20 4. A rock drops from a very high altitude towards the surface of the moon. Which of the following is correct about the changes that occur in the rocks mass and weight?