5.2. Circular Motion

• What is circular motion caused by?

  Centripetal force
• Match the force with its description:

  Centripetal Force ↔️ Real force causing circular motion

  Centrifugal Force ↔️ Apparent force due to inertia
• The linear speed in circular motion is related to angular speed by the formula v = rω
• The centrifugal force is a real force that pushes objects outward in circular motion.

  False
• The centrifugal force is a result of an object's inertia.


  True
• Angular displacement is the angle through which an object rotates
• The unit of linear speed is m/s
• The formula for centripetal acceleration is a_c = v^2/r
• What is the primary difference between centripetal and centrifugal forces?

  One is real, one is apparent
• What is the centrifugal force a result of?

  The object's inertia
• Linear speed in circular motion is related to angular speed by the formula v = rω
• Centripetal acceleration is responsible for changing the magnitude of an object's velocity

  False
• Centrifugal force is a real force that pushes objects outward in circular motion

  False
• The centripetal force is directed towards the center
• Angular displacement is measured in radians only.

  False
• What type of force is the centripetal force?

  Real force
• In what direction is the centripetal force directed?

  Towards the center
• What is the unit of measurement for angular speed?

  rad/s
• In the formula v = rω, what does r represent?

  Radius of circular path
• Centripetal acceleration is directed towards the center of the circular path.


  True
• An object moving in a circle with a smaller radius will have a higher centripetal acceleration if its linear speed remains constant.


  True
• Match the term with its definition:

  Centripetal Force ↔️ Force directed towards the center

  Centrifugal Force ↔️ Apparent force directed outwards
• What is the definition of angular speed?

  Rate of change of angular displacement
• Centripetal acceleration is directed towards the center
• Centripetal force is directed towards the center
• The centrifugal force is a real force directed outwards from the center of the circular path.

  False
• What are the units for angular speed?

  rad/s or deg/s
• What is the linear speed of an object moving in a circle with a radius of 2 meters at an angular speed of 3 radians per second?

  6 m/s
• Circular motion is the motion of an object in a circular path
• Match the force with its description:

  Centripetal Force ↔️ Real force causing circular motion

  Centrifugal Force ↔️ Apparent force due to inertia
• Linear speed in circular motion is calculated using the formula v = rω.

  True
• What is the angular speed if an object completes a full circle in 2 seconds?

  $\pi$ rad/s
• In the formula a_c = v^2/r, what does v represent?

  Linear speed
• The centrifugal force is a result of the object's inertia
• Angular displacement is measured in radians
• What does 'r' represent in the formula v = rω?

  Radius of the circular path
• What is the formula for centripetal acceleration using angular speed?

  $ac =$$rω^{2}$
• Match the applications of circular motion with their examples:

  Space Exploration ↔️ Orbits of planets

  Technology ↔️ Electric motors

  Sports ↔️ Hammer throw

  Nature ↔️ Bacteria flagella