Page 205 - SK Year 6 Science DLP

MACHINES
MACHINES
MESIN

Complex Machines

Some tools are much easier to use to do work when a number of
simple machines are combined. Observe the situations below.

The two scissor blades are two wedges that are attached
How does this using a screw. The screw becomes the fulcrum for the two
pair of scissors wedges. Hence, it is much easier to use the scissors through
function? the lever system.

A pair of scissors is a
combination of three
simple machines. There
is a wedge, a screw, and
a lever. This combination
facilitates cutting.

The combination of simple machines such as the
wedge, screw, and lever makes the scissors a
complex machine. What will happen if the screw on
the scissors is removed? Why?

Look at the pictures below. Identify the
simple machines found in these tools.

Why is this object
a complex machine?

pencil sharpener compasses toy car

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