A crow-bar of length 2.0 m is used as a machine to lift a box of 100 kgf by placing a fulcrum at a
distance of 0.1 m from the box. Calculate the effort
required.
[5.26 kgf)
[Hints : Effort arm = 2.0 m - 0.1 m = 1.9 m)

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)

iron would move it is magnetic there is a mag field around the current in the wire