Question

In a lever, a load of 600 N is lifted by using 400 N effort. If the load is at thedistance of 20 cm and the effort at the distance of 40 cm from the fulcrum,calculate its efficiency

Answer 1

Answer:

Solution: Total length of a crowbar = 120 cm Load arm = 20 cm. Effort ... To find effort, we have Effort = Load / M.A = 5 / 2 = 2.5 kgf ... (a) To which class of lever does it belong?(b) If AB =1.