Newton’s Universal Law of Gravitation – Practice Problems

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IB Physics Power Points Topic 6 SL Fields and Forces. www.pedagogics.ca. Newton’s Universal Law of Gravitation – Practice Problems. 1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms -2 )

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IB Physics Power Points

Topic 6 SL

Fields and Forces

www.pedagogics.ca

Newton’s Universal Law of Gravitation – Practice Problems

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest
• A 50 kg student in an elevator moving downwards at 2 ms-1.
• A 50 kg student in an elevator moving upwards at 5 ms-1.
• A 50 kg student in an elevator accelerating upwards at 1 ms-2.
• A 50 kg student in an elevator accelerating downwards at 3 ms-2
• A 50 kg student in an elevator falling freely

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest

weight = 50 kg x 10 ms-2 = 500 N

500 N

mg

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest

500 N

Fg

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest

500 N

W

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest

FN

500 N

500 N

mg

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest
• A 50 kg student in an elevator moving downwards at 2 ms-1.
• A 50 kg student in an elevator moving upwards at 5 ms-1.

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest
• A 50 kg student in an elevator moving downwards at 2 ms-1.
• A 50 kg student in an elevator moving upwards at 5 ms-1.

FN

500 N

500 N

mg

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest
• A 50 kg student in an elevator moving downwards at 2 ms-1.
• A 50 kg student in an elevator moving upwards at 5 ms-1.
• A 50 kg student in an elevator accelerating upwards at 1 ms-2.

FN

500 N

500 N

mg

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest
• A 50 kg student in an elevator moving downwards at 2 ms-1.
• A 50 kg student in an elevator moving upwards at 5 ms-1.
• A 50 kg student in an elevator accelerating upwards at 1 ms-2.

FN

?

500 N

mg

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest
• A 50 kg student in an elevator moving downwards at 2 ms-1.
• A 50 kg student in an elevator moving upwards at 5 ms-1.
• A 50 kg student in an elevator accelerating upwards at 1 ms-2.

FN

?

Fnet

ma

ma = 50 x 1 = 50 N

500 N

mg

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest
• A 50 kg student in an elevator moving downwards at 2 ms-1.
• A 50 kg student in an elevator moving upwards at 5 ms-1.
• A 50 kg student in an elevator accelerating upwards at 1 ms-2.

FN

550 N

500 N

mg

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest
• A 50 kg student in an elevator moving downwards at 2 ms-1.
• A 50 kg student in an elevator moving upwards at 5 ms-1.
• A 50 kg student in an elevator accelerating upwards at 1 ms-2.
• A 50 kg student in an elevator accelerating downwards at 3 ms-2

FN

350 N

500 N

mg

1. Draw free body diagrams (including annotations and calculated values) representing the following situations (consider g = 10 ms-2)

• A 50 kg student in an elevator at rest
• A 50 kg student in an elevator moving downwards at 2 ms-1.
• A 50 kg student in an elevator moving upwards at 5 ms-1.
• A 50 kg student in an elevator accelerating upwards at 1 ms-2.
• A 50 kg student in an elevator accelerating downwards at 3 ms-2
• A 50 kg student in an elevator falling freely

500 N

mg

2. Which of the following graphs shows how the gravitational force varies with the distance of separation between two objects?

3. A satellite experiences a gravitational force of 228 N at an altitude of 4.0 × 107 m above Earth.

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What is the mass of this satellite?

• 23 kg
• 650 kg
• 910 kg
• 1 200 kg

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 rock’s mass and weight?