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Questions and Answers
A box is resting on a Ø³Ø·Ø Ù…Ø§Ø¦Ù„. Which of the following forces MUST be included in a free-body diagram of the box?
A box is resting on a Ø³Ø·Ø Ù…Ø§Ø¦Ù„. Which of the following forces MUST be included in a free-body diagram of the box?
- Gravitational force and normal force. (correct)
- Frictional force and tension force.
- Applied force and tension force.
- Applied force and normal force.
A car accelerates from rest on a horizontal road. What force is primarily responsible for the car's acceleration?
A car accelerates from rest on a horizontal road. What force is primarily responsible for the car's acceleration?
- The frictional force between the tires and the road. (correct)
- The gravitational force.
- The engine force.
- The normal force exerted by the road.
An object is suspended from a ceiling by a vertical spring. Which statement accurately describes the forces acting on the object?
An object is suspended from a ceiling by a vertical spring. Which statement accurately describes the forces acting on the object?
- The spring force is less than the gravitational force.
- The spring force is zero.
- The spring force is equal to the gravitational force. (correct)
- The spring force is greater than the gravitational force.
A book is sliding across a table. Which of the following changes would MOST likely increase the force of kinetic friction acting on the book?
A book is sliding across a table. Which of the following changes would MOST likely increase the force of kinetic friction acting on the book?
Two people are pulling on a rope in opposite directions. If the tension in the rope is 100 N, what is the magnitude of the force exerted by each person, assuming the rope is not moving?
Two people are pulling on a rope in opposite directions. If the tension in the rope is 100 N, what is the magnitude of the force exerted by each person, assuming the rope is not moving?
A 2 kg block is pushed across a horizontal surface with a force of 10 N. If the coefficient of kinetic friction between the block and the surface is 0.2, what is the acceleration of the block? (Assume $g = 9.8 m/s^2$)
A 2 kg block is pushed across a horizontal surface with a force of 10 N. If the coefficient of kinetic friction between the block and the surface is 0.2, what is the acceleration of the block? (Assume $g = 9.8 m/s^2$)
A spring with a spring constant of 200 N/m is stretched by 0.1 m. What is the magnitude of the force exerted by the spring?
A spring with a spring constant of 200 N/m is stretched by 0.1 m. What is the magnitude of the force exerted by the spring?
An elevator is moving upwards with constant velocity. Which of the following statements is true about the forces acting on the elevator?
An elevator is moving upwards with constant velocity. Which of the following statements is true about the forces acting on the elevator?
Two objects have masses $m_1$ and $m_2$, where $m_1 > m_2$. If both objects experience the same net force, which object will have the greater acceleration?
Two objects have masses $m_1$ and $m_2$, where $m_1 > m_2$. If both objects experience the same net force, which object will have the greater acceleration?
A person is standing in an elevator that is accelerating upwards. How does the normal force exerted by the elevator floor on the person compare to the person's weight?
A person is standing in an elevator that is accelerating upwards. How does the normal force exerted by the elevator floor on the person compare to the person's weight?
Flashcards
Force
Force
An interaction that, when unopposed, will change the motion of an object; a push or pull.
Contact Forces
Contact Forces
Forces resulting from direct physical contact between objects (e.g., friction, tension).
Non-Contact Forces
Non-Contact Forces
Forces that act between objects without physical touching (e.g., gravity, electric force).
Gravitational Force
Gravitational Force
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Normal Force
Normal Force
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Frictional Force
Frictional Force
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Newton's First Law (Law of Inertia)
Newton's First Law (Law of Inertia)
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Newton's Second Law
Newton's Second Law
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Newton's Third Law
Newton's Third Law
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Net Force
Net Force
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Study Notes
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