Page 204 - SK Year 6 Science DLP

Let’s
Let’s
Test Work Made Easy
Test
Aim To investigate ways simple machines can make work easy.

Apparatus and Spring balance, wooden block, plank, books, pencil, thread,
Materials and paper

Steps

1. Carry out this activity in groups.
2. Set up the apparatus as shown in Diagram A. lift
3. Lift the wooden block and take the reading of the
spring balance. spring
balance
4. Set up the apparatus as in Diagram B.
5. Pull the wooden block and take the reading of the
spring balance.

spring
balance
pull upwards
wooden wooden
block block
inclined books
plane
Diagram A
Diagram B
6. Record the readings of the spring balance in the HOTS
HOTS
table as shown below.
7.1.1
7. Report the findings of your investigation. If a wheel and axle
7.1.5
machine is mounted
Method of pulling load Reading of spring balance on the wooden block in
Inclined plane Diagram B, predict the
Without inclined plane reading on the spring
balance. Why?

1. Between the two methods in this activity, which reading of the spring
balance is higher? Why?
2. What is the conclusion for this investigation?

#TEACHER
• The elongation of a stretched spring can be used to measure the force
required in this activity if a spring balance is not available.
• The wooden block is pulled upwards on the inclined plane continuously
at a constant speed.
12.1.1
196
12.1.2