King Knights' Corner

  Pressure Definition: Pressure is the force exerted per unit area on an object or surface. Formula: P = F/A Where: - P = pressure - F = force - A = area Units: Pascal (Pa), psi (pounds per square inch), atm (atmosphere) Types of Pressure: - Atmospheric Pressure: The pressure exerted by the weight of the atmosphere on an object or surface. - Hydrostatic Pressure: The pressure exerted by a fluid (liquid or gas) on an object or surface. - Gauge Pressure: The pressure measured relative to atmospheric pressure. Calculations: 1. Pressure due to a force: P = F/A 2. Atmospheric Pressure: P = ρgh (where ρ is air density, g is acceleration due to gravity, and h is height above sea level) 3. Hydrostatic Pressure: P = ρgh (where ρ is fluid density, g is acceleration due to gravity, and h is depth below surface) 4. Gauge Pressure: P = P_absolute - P_atmospheric Examples: 1. A force of 100 N is applied to a surface area of 0.1 m^2. What is the pressure? P = F/A = 100 N / 0.1 m^2 = 1000 Pa 2. What i

  What is Potential Energy? Potential energy is the energy an object possesses due to its position or configuration. It's the energy an object has because of its height, shape, or arrangement, which can be converted into other forms of energy, such as kinetic energy. Types of Potential Energy There are several types of potential energy, including: 1. Gravitational Potential Energy: the energy an object has due to its height or position in a gravitational field. The higher an object is, the more gravitational potential energy it possesses. 2. Elastic Potential Energy: the energy stored in stretched or compressed materials, such as springs or rubber bands. The more a material is stretched or compressed, the more elastic potential energy it stores. 3. Electric Potential Energy: the energy an object has due to its electric charge or position in an electric field. 4. Chemical Potential Energy: the energy stored in chemical bonds, which can be released through chemical reacti

Master Segun: I'm happy to welcome you again to my class  Density Definition: Density is the amount of mass per unit volume of a substance. Formula: Density = Mass / Volume Units: kg/m³ (kilograms per cubic meter) Key Points: - Density is a scalar quantity, meaning it has no direction. - Density is a physical property of a substance, meaning it can be measured and quantified. - Density is often used to identify a substance, as different substances have unique densities. - Density is affected by temperature and pressure, but not by the shape or size of the substance. Types of Density: - Absolute Density: The density of a substance in its pure state. - Relative Density: The density of a substance relative to the density of water. Measurements: - Mass: Measured in kilograms (kg) - Volume: Measured in cubic meters (m³) - Density: Calculated by dividing mass by volume Examples: - Lead: 11,340 kg/m³ - Copper: 8,960 kg/m³ - Water: 1,000 kg/m³ - Air: 1.2 kg/m³ Applications: - Density is us

 Chisom and Mesoma, you're welcome to Master Segun's Class      Friction Definition: The force that opposes motion between two surfaces that are in contact Types of Friction 1. Static Friction: The force that opposes the initial motion of an object 2. Kinetic Friction: The force that opposes the motion of an object that is already moving 3. Rolling Friction: The force that opposes the motion of an object that is rolling on a surface Causes of Friction ✓Surfaces in Contact: Friction occurs when two surfaces are in contact with each other ✓Normal Force: The force that is perpendicular to the surface that the object is on ✓Coefficient of Friction: A value that represents the amount of friction between two surfaces ✓Adhesion: The attraction between two surfaces that are in contact Factors Affecting Friction ✓Surface Roughness: The rougher the surface, the more friction there will be ✓Surface Area: The larger the surface area, the more friction there will be ✓Normal Force: The great

Chisom and Mesoma, I want to welcome you to Master Segun's Class   Momentum Definition: The product of an object's mass and velocity Equation: Momentum (p) = mass (m) x velocity (v) Units: kg m/s Key Points Momentum is a vector quantity, meaning it has both magnitude and direction. The more massive an object is, the more momentum it will have The faster an object is moving, the more momentum it will have Momentum is conserved in closed systems, meaning that the total momentum before an interaction is equal to the total momentum after the interaction Types of Momentum 1. Linear momentum: The product of an object's mass and linear velocity 2. Angular momentum: The product of an object's moment of inertia and angular velocity Factors Affecting Momentum 1. Mass: Increasing the mass of an object will increase its momentum 2. Velocity: Increasing the velocity of an object will increase its momentum 3. Friction: Friction can decrease the momentum of an object by opposing its m

Welcome to master Segun's class                                                             CENTRE OF MASS Definition: The centre of mass (COM) is the point where the weight of an object can be considered to be concentrated. The  center  of mass is the point at which an object's mass is evenly distributed in all directions. For a non-uniform object, the center of mass can be found by dividing the object into smaller, uniform sections and calculating the center of mass for each section.   Importance: - Crucial in understanding the behavior of objects under various forces and torques - Used in the design of structures and machines to ensure stability and balance - Essential in calculating the trajectory of projectiles and the motion of objects under the influence of gravity   Properties: - Fixed point for a rigid object - Weight of the object acts at the COM - Moment of inertia is minimum at the COM - Object will oscillate around the COM if suspended from a

For those with angle, E.g 30⁰. Make use of the below. Moment = Force × distance × Sin ∅ 1. A force of 15 N is applied to a lever at a distance of 0.5 m from the fulcrum. What is the moment of force? 2. A moment of force of 30 Nm is produced by a force of 10 N. What is the distance of the force from the fulcrum? 3. A force of 20 N is applied to a spanner at a distance of 0.3 m from the fulcrum. What is the moment of force? 4. A moment of force of 25 Nm is required to lift a load. If a force of 5 N is applied to a pulley, what is the radius of the pulley? 5. A force of 18 N is applied to a screw at a distance of 0.4 m from the fulcrum. What is the moment of force? 6. A moment of force of 40 Nm is produced by a force of 8 N. What is the distance of the force from the fulcrum? 7. A force of 12 N is applied to a lever at an angle of 45° to the horizontal. If the length of the lever is 0.6 m, what is the moment of force? 8. A moment of force of 18 Nm is required to turn a bolt. If a force of