Question

1.Which of the following is an example of a second-class lever?

wheelbarrow
broom
crowbar
shovel

2.Which of the following is an example of a first-class lever?

rake
nut cracker
seesaw
elbow joint

Answer 1

1. wheelbarrow 2.seesaw

Answer 2

Answer : (1) wheelbarrow  (2) seesaw

Explanation :

(1) In second- class lever, the fulcrum is at one of the end or we can say the load is in between the effort and the fulcrum. The example of second- class lever is wheelbarrow.

(2) In first- class lever, the fulcrum is in between the applied force or the effort and the load. The example of first class lever is seesaw.