Pmt

• What is the term for the acceleration experienced by an object moving in a circular path at constant speed?

  Centripetal acceleration
• Why does an object moving in a circular path at constant speed experience acceleration?

  Because its velocity is constantly changing due to a change in direction
• According to Newton's first law, what must an object experience to accelerate?


  A resultant force
• What is the direction of the centripetal force acting on an object in circular motion?

  Towards the center of the circle
• How is angular speed (w) defined?


  It is the angle an object moves through per unit time
• How can angular speed (w) be calculated using linear speed (v) and radius (r)?

  By dividing the linear speed (v) by the radius (r)
• What is the relationship between the angle in radians and the time period (T) of an object in circular motion?

  Angular speed can also be found by dividing the angle in radians by the time period (T)
• What is the definition of one radian?

  It is the angle in a sector of a circle when the arc length is equal to the radius of the circle
• How can you convert an angle from degrees to radians?


  By multiplying by $\frac{\pi}{180}$
• How can you convert an angle from radians to degrees?

  By multiplying by $\frac{180}{\pi}$
• What is the relationship between arc length and the angle in radians for a complete circle?

  • The arc length of a complete circle is $2\pi r$
  • The angle in radians for a full circle is $2\pi$
• What are the key concepts related to circular motion and angular speed?

  • Circular motion involves constant speed but changing velocity
  • Centripetal acceleration is necessary for circular motion
  • Centripetal force acts towards the center of the circle
  • Angular speed can be calculated using linear speed and radius
  • Angles can be measured in radians, with conversion formulas to and from degrees