ashwin99

Rishabh39

Asked: January 6, 2025In: Class-11-Physics

Write an expression for torque in three-dimensional motion. Hence write the expressions for the rectangular components of torque.

Three-dimensional motion involves movement in three spatial dimensions, characterized by changes in position along the x, y, and z axes simultaneously. Class 11 Physics Systems of Particle & Rotational Motion CBSE EXAM 2024-25

Rishabh39

Asked: January 6, 2025In: Class-11-Physics

Show that the magnitude of torque = magnitude of force x moment arm. Also show that only the angular component of the force is responsible for producing torque.

Magnitude refers to the size or amount of a quantity, regardless of its direction, often used to describe scalar and vector quantities. Class 11 Physics Systems of Particle & Rotational Motion CBSE EXAM 2024-25

Rishabh39

Asked: January 6, 2025In: Class-11-Physics

Explain how torque can be expressed as a vector product of two vectors. How is the direction of torque determined?

Vectors are quantities that have both magnitude and direction, used to represent physical quantities like velocity, force, and displacement. Class 11 Physics Systems of Particle & Rotational Motion CBSE EXAM 2024-25

Rishabh39

Asked: January 6, 2025In: Class-11-Physics

Obtain an expression for the work done by a torque. Hence write the expression for power.

Torque is the rotational force that causes an object to rotate around an axis, influenced by force and distance from pivot. Class 11 Physics Systems of Particle & Rotational Motion CBSE EXAM 2024-25

shanti34

Asked: January 6, 2025In: Class-11-Physics

What is a couple? What effect does it have on a body? Show that the moment of couple is same irrespective of the point of rotation of a body.

Rotation is the circular motion of an object around a central axis or point, involving angular displacement and torque effects. Class 11 Physics Systems of Particle & Rotational Motion CBSE EXAM 2024-25

shanti34

Asked: January 6, 2025In: Class-11-Physics

State and explain the principle of moments of rotational equilibrium.

Rotational equilibrium occurs when the net torque acting on a body is zero, resulting in no angular acceleration or rotation change. Class 11 Physics Systems of Particle & Rotational Motion CBSE EXAM 2024-25

shanty099

Asked: December 9, 2024In: Class-11-Physics

Mention the characteristic features of gravitational force.

Gravitational force is universal, attractive, proportional to masses, inversely proportional to distance squared, and dominates large-scale interactions. NCERT Class 11 Physics Gravitation CBSE EXAM 2024-25

shanty099

Asked: December 9, 2024In: Class-11-Physics

Express law of gravitation in vector form. What are its implications?

The vector form of the law of gravitation implies that the gravitational forces acting between two particles form action and reaction pair. NCERT Class 11 Physics Gravitation CBSE EXAM 2024-25

shanty099

Asked: December 9, 2024In: Class-11-Physics

Mention some experimental evidences in support of Newton’s law of gravitation.

Newton’s Law of Universal Gravitation states that every particle in the universe exerts an attractive force on every other particle. This force is proportional to the product of their masses and inversely proportional to the square of the distance between ...

shanty099

Asked: December 9, 2024In: Class-11-Physics

Briefly explain the Cavendish’ s experiment for the determination of the universal constant G.

The value of the gravitational constant G was first determined experimentally by English scientist Henry Cavendish in 1798. NCERT Class 11 Physics Gravitation CBSE EXAM 2024-25

ashwin99

Write an expression for torque in three-dimensional motion. Hence write the expressions for the rectangular components of torque.

Show that the magnitude of torque = magnitude of force x moment arm. Also show that only the angular component of the force is responsible for producing torque.

Explain how torque can be expressed as a vector product of two vectors. How is the direction of torque determined?

Obtain an expression for the work done by a torque. Hence write the expression for power.

What is a couple? What effect does it have on a body? Show that the moment of couple is same irrespective of the point of rotation of a body.

State and explain the principle of moments of rotational equilibrium.

Mention the characteristic features of gravitational force.

Express law of gravitation in vector form. What are its implications?

Mention some experimental evidences in support of Newton’s law of gravitation.

Briefly explain the Cavendish’ s experiment for the determination of the universal constant G.

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