Physics: Forces
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নিউটনের প্রথম সূত্র অনুসারে, একটি বস্তু কি করবে যদি ওপর থেকে কোন বহিরাগমনী বল পায়?

  • এটি আরামে থাকবে
  • এটি ত্বরণ অনুভব করবে (correct)
  • এটি একটি পরিমাপিত বেগে চলতে থাকবে
  • এটি উল্টা দিকে যাবে
  • নিউটনের দ্বিতীয় সূত্র অনুসারে, প্রযুক্ত বলের নিট প্রভাব?

  • দৈর্ঘ্যের পরিবর্তন
  • বিগতির পরিবর্তন
  • ভরের পরিবর্তন
  • ত্বরনের পরিবর্তন (correct)
  • পদার্থ গতি বিশ্লেষণের জন্য কোন প্রকার বল ব্যবহৃত হয়?

  • মিথ্যা শক্তিশালী বল
  • অসংজ্ঞানুরূপ বল
  • দুর্বল নিউক্লিয়ার বল
  • গুরুত্বাকর্ষণ বল (correct)
  • নিউটনের সাধারণ গুরুত্বাকর্ষণের গুরুত্বের কি?

    <p>নিউটনের সাধারণ গুরুত্বাকর্ষণের আইন</p> Signup and view all the answers

    নিউটনের সাধারণ গুরুত্বাকর্ষণের অনুরোধ, $F = ma$. $m$-t-emphasize(নির্দিষ্ট) emphasize(নির-0.5em)(t), $a$-t-emphasize(emphasize(নি-0.5em)(1em)(নি)) emphasize((emphasize(নি-0.5em)(0.5em)(t))**)।

    <p>$F = 0.5a$</p> Signup and view all the answers

    নিউটনের প্রাথামিক গুরুত্বাকর্ষণের আনু-0.5em) emphasize(emphasize(emphasize(নি-(0.5em)(0.5em)(0.5em)(t)))) emphasize((emphasize(emphasize(emphasize(emphasize(emphasize(emphasize(emphasize(নি-(0.5em)(0.5em)(0.5em)(0.5em)(t)))(t))))))*(t)**)।

    <p><strong><em>emphasize</em>(</strong><em>emphasize</em>(<strong><em>emphasize</em>(</strong><em>emphasize</em>(<strong><em>emphasize</em>(</strong><em>emphasize</em>(<strong><em>emphasize</em>(<strong>নি-(0.5em)(0.5em)(0.5em)(0.5em)<em>emphasize</em>(</strong>(<em>emphasize</em>(</strong>_0.5a$</p> Signup and view all the answers

    emphasize(_n(0.5-(n(0.5-$ u$-n(0.5-(n(0.5-$)-n(0.5-$)n(0.5-$)__-n(0.5-$(_n(0.5-$$)-n(0.5-$)**-_n(0.5-$__$)$_n(0.5-$$

    <p>$(_n(_n(_n(c * d)$</p> Signup and view all the answers

    Study Notes

    Physics: Forces

    Physics is the scientific study of the structure of matter and the interactions between the fundamental constituents of the observable universe. Forces play a crucial role in physics, as they govern the behavior of matter and energy in various physical phenomena. In physics, the concept of forces is studied under the branch of mechanics, which encompasses classical mechanics and modern developments such as quantum mechanics and relativistic mechanics.

    Classical Mechanics

    Classical mechanics, which includes kinematics and dynamics, deals with the motion of objects under the influence of given forces. This branch of physics is based on Newton's three laws of motion, which are fundamental principles that describe the relationship between forces and motion.

    Newton's Laws of Motion

    Newton's first law, also known as the law of inertia, states that an object at rest remains at rest or in uniform motion unless acted upon by an external force. This law is essentially a statement about the resistance of an object to a change in its velocity.

    Newton's second law equates the net force on an object to the rate of change of its momentum, which is the product of its mass and velocity. This law describes the relationship between the force applied to an object and the acceleration it experiences.

    Newton's third law, the law of action and reaction, states that when two particles interact, the forces each exerts on the other are equal in magnitude and opposite in direction. This law is a fundamental principle of conservation of momentum.

    Types of Forces

    In physics, forces are categorized into various types based on their nature and origin. Some common types of forces include:

    • Gravitational force: This force is responsible for the attraction between two masses. It is described by Newton's law of universal gravitation.
    • Electromagnetic force: This force arises from the interaction between electrically charged particles. It is responsible for phenomena such as magnetism and electric current.
    • Strong nuclear force: This force is responsible for holding atomic nuclei together and is particularly strong at small distances. It is mediated by particles called gluons.
    • Weak nuclear force: This force is responsible for radioactive decay and other nuclear processes. It is much weaker than the strong nuclear force and is mediated by particles called W and Z bosons.

    Forces in Modern Physics

    In modern physics, the concept of forces is extended to include more complex phenomena. For example, in quantum mechanics, forces are described in terms of fields and potentials, such as the electromagnetic field and the gravitational potential. In relativistic mechanics, the concept of force is integrated with the theory of spacetime, as described by Einstein's theory of general relativity.

    Applications of Forces in Physics

    The study of forces has numerous applications in various fields of physics. For example, in mechanics, the principles of forces are used to analyze the motion of objects in various systems, such as planetary motion and projectile motion. In electromagnetism, the study of forces is used to understand the behavior of electrically charged particles and the generation of electromagnetic fields. In quantum mechanics, the study of forces is used to explain the behavior of subatomic particles and the fundamental interactions between them.

    In summary, forces play a central role in the study of physics, governing the behavior of matter and energy in various physical phenomena. The principles of forces are studied under the branch of mechanics, which includes classical mechanics and modern developments such as quantum mechanics and relativistic mechanics. The study of forces has numerous applications in various fields of physics, from the analysis of motion in mechanics to the understanding of fundamental interactions in quantum mechanics.

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    Description

    Explore the fundamental principles of forces in physics, including Newton's laws of motion, types of forces like gravitational and electromagnetic forces, and their applications in classical and modern physics. Understand how forces govern the behavior of matter and energy in various physical phenomena.

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