A boy is whirling a stone at the end of a string around his head. The string makes two complete revolution every second, and the tension in the string is T. The boy decreases the speed of the stone, keeping the radius of the circle unchanged, so that the string makes one complete revolutions per second. What happens to the tension in the sting

where is the circuit diagram ?

the higher the current the higher the mag field around it the higher the influence on the compass

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day