Week 9:  31 October to 4 November 2021

31 October 2021:

In Class:  The Pendulum:

Calculating the period of a pendulum (Not on Reference Tables):

  • T = 2π√l/g
  • T = period
    π = 3.141 592 65
    l = length of pendulum
    g = acceleration due to gravity

    • Expectations:  Students are expected to be able to solve problems using the pendulum equation.

    Relationship between frequency and period (See Waves Table):

  • T = 
  •  1
      f  
  • T = period
    f = frequency

    • Expectations:  Students are expected to be able to convert period and frequency.

    Lab 4:
    Data collection and analysis of Free Fall Reaction Time Lab.

    Expectations:  Students will be able to calculate time from distance in free fall.

    Due:  Pages 1:167-169 (237 – 252).

    Homework:  Pages 1:169-170 (253 – 259) and finish the Free Fall Reaction Time Lab report.

    1 November 2021:

    In Class:  Work:

  • W = Fd = ΔET
  • W = work
    F = force
    d = displacement or distance
    Δ = change
    ET = total energy

    • Expectations:  Students are expected to do work (or, at least, to solve work problems).

    Due:  Pages 1:169-170 (253 – 259) and finish the Free Fall Reaction Time Lab report.

    Homework:  Pages 2:49-50 (1 – 10).

    2 November 2021:

    In Class:  Power:

  • P = 
  •  W
      t  
  •  = 
  •  F d
      t  
  •  = F v̅
  • P = power
    W = work
    t = time
    F = force
    d = displacement or distance
    v̅ = average velocity or speed

    • Expectations:  Students will be able to solve power problems.

    Due:  Pages 2:49-50 (1 – 10).

    Homework:  Pages 2:50-51 (11 – 25).

    3 November 2021:

    No Class:  Physics does not meet on Thursday.

    4 November 2021:

    In Class:  Gravitational Potential Energy:

  • ΔPE = mgΔh
  • Δ = change
    PE = potential energy
    m = mass
    g = acceleration due to gravity
    h = height

    • Expectations:  Students will be able to solve gravitational potential energy problems.

    Due:  Pages 2:50-51 (11 – 25).

    Homework:  Pages 2:51-53 (26 – 31).

    Note:  1st quarter ends 9 November 2023.