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ICSE Class 6 Answered

A crowbar of length 10 m has a fulcrum at a distance of 4 m from one end. Calculate the effort required to lift a load of 120 N.  
Asked by soubhagyasabat55 | 14 Sep, 2021, 09:35: AM
answered-by-expert Expert Answer
distance of fulcrum from one end = 4 m 
Total length = 10 m 
Load = 120 N 
distance of fulcrum from other end = 10 - 4 = 6 m 
Load x load arm = Effort x effort arm
120 x 4 = Effort x 6 
(120 x 4)/ 6 = Effort 
Effort = 80 N 
Answered by Shiwani Sawant | 20 Sep, 2021, 12:02: PM
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