**Activity 2.2 – Free Body Diagrams**In each case below, draw the free body diagram for the mass labeled “m”. Label all forces and include friction between surfaces as needed but assume air drag is negligible.1. **A box sitting stationary on a horizontal surface** - Diagram: The box (m) is on a flat surface. - Forces: - Gravitational force (downward) - Normal force (upward)2. **A ball on a string being twirled in a horizontal circle** - Diagram: The ball (m) is attached to a string and moving in a circular path. - Forces: - Tension force (directed radially inward toward the center of the circle)3. **A box sliding up an inclined plane** - Diagram: The box (m) is moving up an inclined plane with velocity \(v\). - Forces: - Gravitational force (downward, can be divided into components parallel and perpendicular to the plane) - Normal force (perpendicular to the plane) - Friction force (opposing the motion, parallel to the plane)4. **A box being pulled across a horizontal surface** - Diagram: The box (m) is being pulled horizontally with a force at an angle. - Forces: - Applied force (at the angle of pulling) - Gravitational force (downward) - Normal force (upward) - Friction force (opposing the motion)5. **A baseball just AFTER it leaves a bat** - Diagram: The baseball (m) has a velocity \(v\) upon release. - Forces: - Gravitational force (downward)6. **A baseball at the peak of its trajectory** - Diagram: The baseball (m) is at the topmost point in its path. - Forces: - Gravitational force (downward)7. **A sign hanging by two wires in a corner** - Diagram: The sign (m) is held by two wires (one from the ceiling and one from the wall). - Forces: - Tension forces from wire 1 (T1) and wire 2 (T2) - Gravitational force (downward)8. **A package held stationary against a wall** -

When a question with multiple subparts is given and nothing is specified, then according to the…

Activity 2.2 - Free Body Diagrams In each case below, draw the free body diagram for the mass labeled "m". Label all forces and include friction between surfaces as needed but assume air drag is negligible. A box sitting stationary on a horizontal surface A box sliding up an inclined plane m A baseball just AFTER it leaves a bat m m A sign hanging by two wires in a corner T₁ m m T₂ A book in an elevator with a second book on top. The book is being accelerated upwards. A ball on a string being twirled in a horizontal circle A box being pulled across a horizontal surface A baseball at the peak of its trajectory m m m A package held stationary against a wall P m P Moving two boxes by pushing on the left box. m

Activity 2.2 - Free Body Diagrams In each case below, draw the free body diagram for the mass labeled "m". Label all forces and include friction between surfaces as needed but assume air drag is negligible. A box sitting stationary on a horizontal surface A box sliding up an inclined plane m A baseball just AFTER it leaves a bat m m A sign hanging by two wires in a corner T₁ m m T₂ A book in an elevator with a second book on top. The book is being accelerated upwards. A ball on a string being twirled in a horizontal circle A box being pulled across a horizontal surface A baseball at the peak of its trajectory m m m A package held stationary against a wall P m P Moving two boxes by pushing on the left box. m

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter5: Displacement And Force In Two Dimensions

Section: Chapter Questions

Problem 104A

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Concept explainers

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

Question

**Activity 2.2 – Free Body Diagrams**

In each case below, draw the free body diagram for the mass labeled “m”. Label all forces and include friction between surfaces as needed but assume air drag is negligible.

1. **A box sitting stationary on a horizontal surface**
- Diagram: The box (m) is on a flat surface.
- Forces:
- Gravitational force (downward)
- Normal force (upward)

2. **A ball on a string being twirled in a horizontal circle**
- Diagram: The ball (m) is attached to a string and moving in a circular path.
- Forces:
- Tension force (directed radially inward toward the center of the circle)

3. **A box sliding up an inclined plane**
- Diagram: The box (m) is moving up an inclined plane with velocity \(v\).
- Forces:
- Gravitational force (downward, can be divided into components parallel and perpendicular to the plane)
- Normal force (perpendicular to the plane)
- Friction force (opposing the motion, parallel to the plane)

4. **A box being pulled across a horizontal surface**
- Diagram: The box (m) is being pulled horizontally with a force at an angle.
- Forces:
- Applied force (at the angle of pulling)
- Gravitational force (downward)
- Normal force (upward)
- Friction force (opposing the motion)

5. **A baseball just AFTER it leaves a bat**
- Diagram: The baseball (m) has a velocity \(v\) upon release.
- Forces:
- Gravitational force (downward)

6. **A baseball at the peak of its trajectory**
- Diagram: The baseball (m) is at the topmost point in its path.
- Forces:
- Gravitational force (downward)

7. **A sign hanging by two wires in a corner**
- Diagram: The sign (m) is held by two wires (one from the ceiling and one from the wall).
- Forces:
- Tension forces from wire 1 (T1) and wire 2 (T2)
- Gravitational force (downward)

8. **A package held stationary against a wall**
-

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