GP1_2Q_W3 D1

Ball Drop Activity

  • Purpose: To observe the behavior of a ball when dropped from various heights.

  • Levels to Be Tested: Knee, waist, and chest.

  • Instructions: Hold the ball at the designated level and drop it.

    • Observe how high the ball bounces after hitting the flat surface until it comes to a stop.

Questions to Ponder

  • Did the ball return to its initial height after the first bounce?

  • Which height allowed the ball to bounce the longest?

  • What terms or concepts relate to the activity performed?

Harmonic Motion Overview

  • Focus Areas: Amplitude, frequency, angular frequency, period, displacement, velocity, and acceleration of oscillating systems.

    • Objectives Include:

      • Relating and understanding the above concepts.

      • Calculating and solving problems involving these concepts.

Periodic Motion

  • Definition: Motion that repeats itself in a definite cycle.

  • Characteristics:

    • Occurs around a stable equilibrium position.

    • A restoring force acts when displaced from equilibrium.

Equilibrium Points

  • Point A: At equilibrium, no force is acting on the object; spring is neither stretched nor compressed.

  • Point B: Force F opposes the push against the spring.

  • Point C: Spring releases, and the object moves back towards the equilibrium point due to force F.

Simple Harmonic Motion (SHM)

  • Description: A type of periodic motion where the restoring force is directly proportional to the displacement from equilibrium.

    • Restoring force is acting opposite to the direction of displacement.

    • Equation: Fs = -kx

      • Fs = restoring force (N)

      • x = displacement from equilibrium (m)

      • k = spring constant (N/m)

Examples

Example 1: Block on Horizontal Spring

  • Given: 2.0 kg block, k = 50 N/m, displaced by 0.1 m

  • Calculations:

    • Fs = -(50 N/m)(0.1 m) = -5.0 N

Example 2: Stretching a Spring

  • Given: k = 65.6 N/m, stretched with a force of 15.6 N

  • Calculation:

    • Using Fs = -kx, 15.6 N = -(65.6 N/m)x

    • Result: x = 0.238 m

Questions Section

  • Open floor for any questions regarding the examples and concepts discussed.