Podcast
Questions and Answers
What forces are acting on an eagle as it glides through the air along a horizontal path?
What forces are acting on an eagle as it glides through the air along a horizontal path?
- Friction and Tension
- Only Gravity
- Normal Force and Tension
- Air Resistance and Gravity (correct)
What forces are acting on a dog being pulled by his dog chain across the ground at a constant speed?
What forces are acting on a dog being pulled by his dog chain across the ground at a constant speed?
- Only Gravity
- Gravity and Friction
- Friction, The Normal Force, Gravity, and Tension (correct)
- Tension and Air Resistance
What forces act on an elevator that is descending slowly without contact with the walls?
What forces act on an elevator that is descending slowly without contact with the walls?
- Only Gravity
- Gravity and Tension (correct)
- Friction and Normal Force
- Air Resistance and Gravity
What forces are acting on a physics book sliding across a level table?
What forces are acting on a physics book sliding across a level table?
What force is acting on a football moving upward and rightward toward the peak of its trajectory?
What force is acting on a football moving upward and rightward toward the peak of its trajectory?
What forces are acting on a book that is at rest upon a table?
What forces are acting on a book that is at rest upon a table?
What forces are acting on a large crate being pushed leftward across the floor at a constant velocity?
What forces are acting on a large crate being pushed leftward across the floor at a constant velocity?
What forces are acting on a sign suspended by two cables at rest?
What forces are acting on a sign suspended by two cables at rest?
What forces are acting on a truck that skids to a stop from a very high speed?
What forces are acting on a truck that skids to a stop from a very high speed?
What forces are acting on a person standing on the ground?
What forces are acting on a person standing on the ground?
What forces are acting on a sledder slowing down while gliding into the wind across unpacked snow?
What forces are acting on a sledder slowing down while gliding into the wind across unpacked snow?
What forces act on a parachutist falling to the ground at a constant velocity?
What forces act on a parachutist falling to the ground at a constant velocity?
Flashcards
Friction
Friction
The force that opposes motion between two surfaces in contact.
Normal Force
Normal Force
A force that acts perpendicular to a surface, pushing back against an object resting on it.
Tension
Tension
The force exerted by a rope, cable, or chain.
Gravity
Gravity
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Air Resistance
Air Resistance
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Static Equilibrium
Static Equilibrium
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Dynamic Equilibrium
Dynamic Equilibrium
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Weight
Weight
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Terminal Velocity
Terminal Velocity
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Projectile Motion
Projectile Motion
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Net Force
Net Force
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Applied Force
Applied Force
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Study Notes
Forces in Motion
- An eagle glides smoothly through the air, highlighting the balance between air resistance and gravitational forces.
- A dog is pulled across the ground at a constant speed by a chain, demonstrating the interplay of tension, gravity, normal force, and friction despite the lack of air resistance.
Elevator Dynamics
- The descent of an elevator, suspended by cables and moving slowly, showcases the effects of gravity countered by tension without any interaction with the elevator shaft walls.
Sliding Objects
- A physics book sliding on a level table affirms the impacts of gravity, friction, and the normal force, emphasizing the forces at play in horizontal movement.
Projectile Motion
- A football ascending towards its peak demonstrates that only gravitational force is acting on it, disregarding air resistance.
Static Objects
- A book resting on a table illustrates the balance of the normal force acting upward against gravity pulling downward.
Constant Velocity Dynamics
- A large crate pushed leftward at a constant speed reveals the combined effects of gravity, normal force, friction, and an applied force, remaining balanced in motion.
Suspended Objects
- A sign hanging at rest from two cables reflects the balance of tension and gravitational force acting on it.
Stopping Dynamics
- A truck skidding to a halt from high speed emphasizes the factors of air resistance, normal force, gravity, and friction at play during deceleration.
Standing Force Interactions
- A person standing on the ground is an example of the balance between gravitational force pulling down and the normal force exerted by the ground.
Impact of Wind Resistance
- A sledder slowing down while gliding into the wind across snow signifies the forces of air resistance, gravity, normal force, and friction affecting movement.
Parachutist Dynamics
- A parachutist falling at a constant velocity illustrates the balance between gravitational force and air resistance, resulting in terminal velocity.
Studying That Suits You
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Description
Test your understanding of physics concepts with these flashcards. Each card presents a scenario related to forces such as air resistance, friction, and tension, challenging you to define and explain the underlying principles. Perfect for quick revision or studying foundational physics concepts.
