TURNING FORCES

The turning effect of a force is known as the moment.
The moment is force multiplied by perpendicular distance from turning point to the line of action of the force.
Moments can be CLOCKWISE & ANTICLOCKWISE

IT'S USES

• Scissors & Wheelbarrow
• Opening a Tin Lid / Can
• Water Pumping
• Arm Wrestling
• Opening a door knob

Scissors
Scissors have sharp blades which are set up so that when you apply turning force on the handles, the sharp edges meet and cross closely cutting through any thin material

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Wheelbarrow
A wheelbarrow is free to pivot around the large wheel at the front. When you lift the handles, the force causes the Wheelbarrow to swing upwards and turn around the wheel. The long body and handles of a Wheelbarrow increase the turning effect and makes it easier to tip out the heavy load

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Opening a Tin Can
You use a can opener to open a tin can, the can opener is a sharp wedge that has a sharp point or blade that is forced into and through the metal of the top of a can, a lever is attached which pierces the can , we then push the lever back, move the wedge and apple pressure again

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Water Pumping
The user must apply a turning force to this rod to draw the piston up & down the cylinder, the more turning force you apply on the rod, the pressure you apply on the piston, thats where the water underneath the ground ascends & releases the water

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Opening a door knob
In order for the door to be opened, a force must be applied to turn the knob. The door handle is far away from the hinges because it will be easier to open the door as the distance from the pivot will play a role