# Lesson Notes By Weeks and Term - Senior Secondary 1

Verification of Hooke's law

Term: 3rd Term

Week: 2

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject:      Physics

Topic:-       Verification of Hooke’s law

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

1. Carry out an experiment to verify Hooke’s law

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

 PRESENTATION TEACHER’S ACTIVITY STUDENT’S ACTIVITY STEP 1 INTRODUCTION The teacher reviews the previous lesson on the Young Modulus Students pay attention STEP 2 EXPLANATION He lists the materials needed and outlines the procedures for the experiment Students pay attention and participates STEP 3 DEMONSTRATION He carries out the experiment and states the observations Students pay attention and participate STEP 4 NOTE TAKING The teacher writes a summarized note on the board The students copy the note in their books

NOTE

MATERIALS REQUIRED -

A spring, a measuring ruler and weights(2kg, 5kg, 8kg and 10kg).

PROCEDURE -

1. Hang a spring from a horizontal metal rod.
2. Attach a mass hanger directly to the bottom of the hanging spring and record the position of the bottom of the mass hanger relative to a meter stick.
3. Hang a weight from the spring and wait for it to come to rest.
4. Record the final position of the mass hanger.
5. Calculate increase in length and and note in the "Observation Table".
6. Repeat the above steps with different weights.
7. Plot a graph with your readings. Force applied (mass X gravity) vs Increase in length (Initial length - Final Length).

OBSERVATION TABLE

 Weight (in kg) Displacement (in cm) 2 1.6 5 4 8 6.4 10 8

GRAPH

EVALUATION:   1. What is the conclusion of the experiment

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively