alever is used to lift a heavy load. when a to-n force pushes one end of the lever down 1.2m the load rises 0.2m. show the weight of the load is 300n

Answer 1

Check for probable typo:
"a lever is used to lift a heavy load. when a 50-n force pushes one end of the lever down 1.2m the load rises 0.2m. show the weight of the load is 300n "
Work done by 50 N force = 50*1.2 =60 N-m
Work done by load = W*0.2
Equate work done
0.2W = 60
W = 60/0.2 N
= 300 N

Answer 2

A lever is used to lift a heavy load. When a 50 N force pushes one end of the lever down 1.2m the load rises .2m. Show the weight of the load is 300N

ADVANTAGE of lever is input/output = 1.2/.2 = 6
W=FD

W=50N*6 (b/c of advantage) = 300N