State the principle of conservation of linear momentum. What is meant by impulse of force? Write its formula. What is meant by couple? Write any two examples. Define torque and cen... State the principle of conservation of linear momentum. What is meant by impulse of force? Write its formula. What is meant by couple? Write any two examples. Define torque and center of mass. A metal ball falls from a height of 1m on a steel plate and jumps to a height of 0.81m. Find the coefficient of restitution.
Understand the Problem
The question is asking about several physics concepts, including the principle of conservation of momentum, impulse of force, couple, torque, and the coefficient of restitution. It seeks definitions and explanations of these concepts, along with a calculation for the coefficient of restitution in a specific scenario.
Answer
Momentum remains constant in an isolated system. Impulse is change in momentum (Impulse = Force × Time). Couple: Two opposing forces (e.g., steering wheel). Torque: Force causing rotation. Center of mass: Point where mass is concentrated. Coefficient of restitution: 0.9.
The principle of conservation of linear momentum states that the total linear momentum of an isolated system remains constant if no external forces act on it. Impulse of force is the change in momentum produced by a force over time, with the formula Impulse = Force × Time. A couple is two equal and opposite forces acting on parallel lines to produce rotation; examples include turning a propeller or a doorknob. Torque is the rotational equivalent of force, and the center of mass is the average position of all the mass in an object. For a metal ball that falls from 1m and jumps to 0.81m, the coefficient of restitution is approximately 0.9.
Answer for screen readers
The principle of conservation of linear momentum states that the total linear momentum of an isolated system remains constant if no external forces act on it. Impulse of force is the change in momentum produced by a force over time, with the formula Impulse = Force × Time. A couple is two equal and opposite forces acting on parallel lines to produce rotation; examples include turning a propeller or a doorknob. Torque is the rotational equivalent of force, and the center of mass is the average position of all the mass in an object. For a metal ball that falls from 1m and jumps to 0.81m, the coefficient of restitution is approximately 0.9.
More Information
Understanding these concepts is crucial in mechanics to analyze forces and motion. The coefficient of restitution indicates how much kinetic energy remains after a collision.
Tips
Confusing torque with force is common; remember torque involves rotation. Also, ensure correct units when calculating impulse.
Sources
- Bansal CLasses Physics Study Material For IIT JEE - Scribd - id.scribd.com
AI-generated content may contain errors. Please verify critical information
