examples of the three classes of levers
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Answers:fulcrum is in the middle, so first class
Answers:First-class levers: Seesaw (also known as a teeter-totter) Bicycle hand brakes Hammer Claw , when pulling a nail with the hammer's claw Second-class levers: Nutcracker Wheelbarrow Wrench Diving Board (spring board) Third-class levers: Baseball bat Boat paddle Stapler Hope this helps!
Answers:First-class levers: Seesaw Crowbar Scissors Second-class levers: Wheelbarrow Wrench Bottle opener Third-class levers: Mousetrap Nail clippers Tweezers
Answers:First-class lever examples: Seesaw (also known as a teeter-totter) Crowbar or claw hammer (removing nails) Spud bar (moving heavy objects) Pliers (double lever) Scissors (double lever) Wheel and axle because the wheel's motions follows the fulcrum, load arm, and effort arm principle Trebuchet an upside down example of the above picture Oars, when used for rowing, steering, or sculling Can opener and bottle opener Bicycle hand brakes Hand trucks are L-shaped but works on the same principle on the wheel as a fulcrum Hammer when pulling a nail with the hammer's claw Tweezers that are shaped like scissors work as double levers Shoehorn Second class lever examples: Wheelbarrow Nutcracker Door Crowbar Stapler Diving board Wrench Dental Elevator Can Opener Third class lever examples: Human arm Tweezers Slings, trebuchets, and fishing rods (also spoons, when used for flinging food. This uses your index finger as the fulcrum, your thumb as the effort, and the load is the food.) Any number of tools, such as a hoe or scythe The main body of a pair of nail clippers, in which the handle exerts the incoming force baseball bat shovel broom staple remover golf club hockey stick The Human Mandible See http://en.wikipedia.org/wiki/Lever for info on each class.