A rigid body is an object with fixed shape and size, where distances between its particles remain constant during motion. Class 11 Physics Systems of Particle & Rotational Motion CBSE EXAM 2024-25
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Orbital velocity is the speed needed for a satellite to maintain orbit. It’s derived using gravitational force and centripetal force. Class 11 Physics Gravitation CBSE Exam 2024-25
Multistage rockets are used in launching satellites to gradually increase velocity. Each stage provides thrust, discarding parts when no longer needed, making the process more efficient. Class 11 Physics Gravitation CBSE EXAM 2024-25
A satellite is an object that orbits a planet or celestial body, either naturally (like moons) or artificially (human-made). Class 11 Physics Gravitation CBSE EXAM 2024-25
Gravitational potential is the amount of work required to bring a unit mass from infinity to a specific point in a gravitational field without acceleration. It is a scalar quantity, meaning it has magnitude but no direction. Class 11 Physics Gravitation
At the Earth’s center, the weight of a body is zero because gravitational forces from all directions cancel out. Class 11 Physics Gravitation CBSE EXAM 2024-25
The value of g depends on altitude, latitude, Earth’s shape, local geology, and the Earth’s rotation. Class 11 Physics Gravitation CBSE Exam 2024-25
By using gravitational force equations, Earth’s mass and density can be estimated from gravitational constant and Earth’s radius. Class 11 Physics Gravitation CBSE Exam 2024-25
Acceleration due to gravity is the force per unit mass, calculated as the gravitational constant multiplied by Earth’s mass divided by distance squared. Class 11 Physics Gravitation CBSE EXAM 2024-25
Gravitational force is directly proportional to the product of masses and inversely proportional to the square of the distance. Class 11 Physics Gravitation CBSE EXAM 2024-25