Newtons Laws

• Newton's First Law:

  • An object will remain at rest or at a constant velocity unless an unbalanced force acts upon it
• Newton's Second Law: Force = mass × acceleration (F = ma), where force is in Newtons, mass is in kg, and acceleration in ms-2
• Weight:

  • Measured using a force meter or weighing scales
  • The greater the gravitational field strength, the greater the weight
• Circular Motion:

  • Object moving in a circle with constant speed
  • The speed is constant, but the direction is always changing, leading to acceleration
  • Centripetal force is required for motion in a circle, directed towards the center
• Inertial Mass:

  • Measure of how difficult it is to change the velocity of an object
  • Calculated by 𝐢𝐧𝐞𝐫𝐭𝐢𝐚𝐥 𝐦𝐚𝐬𝐬 = 𝐟𝐨𝐫𝐜𝐞/𝐚𝐜𝐜𝐞𝐥𝐞𝐫𝐚𝐭𝐢𝐨𝐧
• Newton's Third Law

  • Every action has an equal and opposite reaction
• Acceleration is called centripetal force and is directed towards the center of the circle
• Inertial Mass is a measure of how difficult it is to change the velocity of an object, measured by Inertial Mass = Force / Acceleration
• Newton’s Third Law states that every action force has an equal and opposite reaction force