Question

what is the angular displacement of the minute hand in 20 minutes?

Answer 1

It is simple: In 60 minutes, the minute hands makes a full revolution of 360 degrees. So in 20 minutes it revolves one third, or 120 degrees.

Answer 2

120° is the angular displacement of a minute hand in 20 minutes.

• If we consider the minute hand of the clock, it takes 60 minutes to complete one circle.
• That is it takes 60 minutes to have an angular displacement of 360 °
• We have to find the angular displacement of a minute hand in 20 minutes
• 360° in 60 minutes
• x° in 20 minutes
• x = $\frac{360*20}{60}$ = 120°
• So the angular displacement of a minute hand in 20 minutes is 120°

#SPJ3