Page 114 - SK Year 6 Science DLP

Based on the situations
below, state the Lim, why is
disadvantages of frictional your bicycle
force. making noise?

Be careful, my Oh, no! The gears are
friends. This slope rusty.
is quite steep.

Frictional force produces
unwanted noise.

The brakes are
Now, the brakes Your bicycle tyres worn out too!
are not functioning! are also worn out!
Help!

Frictional force causes surfaces
to be worn out.

Let’s look at the disadvantages
of frictional force in our daily life.
What are the effects of frictional
force in the following situations?

Frictional force produces noise Frictional force causes Frictional force causes the
in an iron cutter machine. the soles of shoes to golf ball to stop.
wear out.

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