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Question
State the class of levers and the relative positions of load (L), effort (E) and fulcrum (F) in (a) a bottle opener, and (b) sugar tongs.
State the class of levers and the relative positions of load (L), effort (E) and fulcrum (F) in (a) a bottle opener, and (b) sugar tongs.
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Solution
A pair of sugar tongs: Class III lever
In these types of levers, the effort E is in between the fulcrum F and the load L and so the effort arm is always smaller than the load arm.
A bottle opener: Class II lever
In these types of levers, the load L is in between the effort E and the fulcrum F. Thus the effort arm is always longer than the load arm.
A pair of sugar tongs: Class III lever
In these types of levers, the effort E is in between the fulcrum F and the load L and so the effort arm is always smaller than the load arm.
A bottle opener: Class II lever
In these types of levers, the load L is in between the effort E and the fulcrum F. Thus the effort arm is always longer than the load arm.
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