Grade 7 Exam > Grade 7 Questions > Which of the following is NOT a contact force...
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Which of the following is NOT a contact force?
- a)Tension
- b)Friction
- c)Gravitational force
- d)Muscular force
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which of the following is NOT a contact force?a) Tensionb) Frictionc) ...
Understanding Contact Forces
In physics, forces can be classified into two main types: contact forces and non-contact forces. Contact forces occur when objects physically touch each other, while non-contact forces act at a distance without physical contact.
Contact Forces Explained
- Tension: This is a force transmitted through a string, rope, or wire when it is pulled tight by forces acting from opposite ends. It is a classic example of a contact force.
- Friction: This force opposes the motion of an object when it is in contact with another surface. It arises from the interaction between the surfaces and is therefore a contact force.
- Muscular Force: This is the force exerted by muscles when they contract. When a person pushes or pulls an object, this force is applied through direct contact, making it a contact force.
Gravitational Force as a Non-Contact Force
- Gravitational Force: Unlike the others, gravitational force acts at a distance. It is the attraction between two masses, such as the Earth and an object. This force does not require physical contact to exist; it operates through the gravitational field.
Conclusion
In summary, the correct answer to the question is option 'C', the gravitational force, as it is a non-contact force, while the others—tension, friction, and muscular force—are all contact forces that require direct interaction between objects. Understanding these distinctions is fundamental in the study of physics and mechanics.
In physics, forces can be classified into two main types: contact forces and non-contact forces. Contact forces occur when objects physically touch each other, while non-contact forces act at a distance without physical contact.
Contact Forces Explained
- Tension: This is a force transmitted through a string, rope, or wire when it is pulled tight by forces acting from opposite ends. It is a classic example of a contact force.
- Friction: This force opposes the motion of an object when it is in contact with another surface. It arises from the interaction between the surfaces and is therefore a contact force.
- Muscular Force: This is the force exerted by muscles when they contract. When a person pushes or pulls an object, this force is applied through direct contact, making it a contact force.
Gravitational Force as a Non-Contact Force
- Gravitational Force: Unlike the others, gravitational force acts at a distance. It is the attraction between two masses, such as the Earth and an object. This force does not require physical contact to exist; it operates through the gravitational field.
Conclusion
In summary, the correct answer to the question is option 'C', the gravitational force, as it is a non-contact force, while the others—tension, friction, and muscular force—are all contact forces that require direct interaction between objects. Understanding these distinctions is fundamental in the study of physics and mechanics.
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Community Answer
Which of the following is NOT a contact force?a) Tensionb) Frictionc) ...
Gravitational force is not a contact force, as it acts at a distance. In contrast, friction, muscular force, and tension all require physical contact between objects. Understanding these distinctions is essential in physics for analyzing different types of interactions.
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Which of the following is NOT a contact force?a) Tensionb) Frictionc) Gravitational forced) Muscular forceCorrect answer is option 'C'. Can you explain this answer? for Grade 7 2025 is part of Grade 7 preparation. The Question and answers have been prepared according to the Grade 7 exam syllabus. Information about Which of the following is NOT a contact force?a) Tensionb) Frictionc) Gravitational forced) Muscular forceCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Grade 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is NOT a contact force?a) Tensionb) Frictionc) Gravitational forced) Muscular forceCorrect answer is option 'C'. Can you explain this answer?.
Which of the following is NOT a contact force?a) Tensionb) Frictionc) Gravitational forced) Muscular forceCorrect answer is option 'C'. Can you explain this answer? for Grade 7 2025 is part of Grade 7 preparation. The Question and answers have been prepared according to the Grade 7 exam syllabus. Information about Which of the following is NOT a contact force?a) Tensionb) Frictionc) Gravitational forced) Muscular forceCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Grade 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is NOT a contact force?a) Tensionb) Frictionc) Gravitational forced) Muscular forceCorrect answer is option 'C'. Can you explain this answer?.
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