Identify the class of lever of these common household items…
Identify the class of lever of these common household items as either first-class, second-class, or third-class levers. Simply write the number of each item and then the class beside it (number, class). 1. nut cracker 2. pliers 3. scissors 4. bicycle crank (the part you pedal!) 5. barbecue tongs
Read DetailsA gardener is moving dirt with a shovel. She must lift 1.0 k…
A gardener is moving dirt with a shovel. She must lift 1.0 kg of dirt into a bucket and the load arm is 1.50 m away from the pivot end of the shovel and the effort arm is 0.30 m (this is a third-class lever with g=9.8 m/s²). The effort force is:
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