Page 35 - Physics Form 5 KSSM_Neat

C Plasticine CHAPTER 1
Instructions:
1. Place a piece of plasticine on a piece of white paper. Force and Motion II
Observe the size and shape of the plasticine.
2. Press the plasticine with your thumb to change its shape
as shown in Photograph 1.10.
KEMENTERIAN PENDIDIKAN MALAYSIA
3. Remove your thumb from the plasticine. Observe the size
and shape of the plasticine.
Photograph 1.10
Discussion:
1. Discuss the change in the shape and size of the spring and sponge when a force is applied
and removed.
2. Discuss whether the plasticine can return to its original size and shape when the force applied on
it is removed.

The force applied on an object can change its shape and
SCAN ME
size. Elasticity is the property of material that enables an SCAN ME
object to return to its original shape and size after the force Video of elasticity
demonstration
applied on it is removed.
Relationship Between Force and Extension of a Spring http://bit.ly/2ZWutU8

A spring extends when a pulling force is applied on it.
What is the relationship between the applied force and the
extension of the spring?

x t 1.1

Inference: The force applied on a spring affects the extension of the spring
Hypothesis: The larger the force applied on a spring, the larger the extension of the spring
Aim: To determine the relationship between the force and extension of a spring
Variables:
(a) Manipulated: Force, F
(b) Responding: Extension of the spring, x
(c) Constant: Stiffness of the spring
Apparatus: Spring with length not less than 10 cm, five pieces of 10 g slotted weights, five
pieces of 20 g slotted weights, five pieces of 50 g slotted weights, half-metre rule
and two retort stands with clamps
Materials: Pin, plasticine and thread

LS 1.4.1 1.4.2 25