Rain is falling vertically with a speed of 35 m s - 1.wind starts blowing after sometimes with a speed of 12 m s -1 in east to west direction in which direction should a boy waiting at a bus stop hold his umbrella
Answers
Rain is falling vertically with a speed of 35 m s - 1.wind starts blowing after sometimes with a speed of 12 m s -1 in east to west direction in which direction should a boy waiting at a bus stop hold his umbrella
Given:-
- Rain is falling vertically downward with a speed of 35 m/s.
- Wind start blowing with speed of 12 m/s from East to West direction.
To Find:-
- The angle at which the umbrella should be hold by the boy so that he won't receive any rain.
Concept used:-
- The boy has to hold the umbrella in direction of velocity of rain w.r.t velocity of the wind.
Solution:-
Let the angle be A.
So, tanA = Velocity of wind/velocity of rain
tanA = 12/35
tanA = tan(19.6°)
Comparing, we get
A = 19.6° .
So, the boy should hold the umbrella at an angle of 19.6° from vertical toward east.
So, the boy should hold the umbrella at an angle of 19.6° from vertical toward east.[Wind is coming from East to West]
Rain is falling vertically with a speed of 35 m s - 1.wind starts blowing after sometimes with a speed of 12 m s -1 in east to west direction in which direction should a boy waiting at a bus stop hold his umbrella
Given:-
- Rain is falling vertically downward with a speed of 35 m/s.
- Wind start blowing with speed of 12 m/s from East to West direction.
To Find:-
- The angle at which the umbrella should be hold by the boy so that he won't receive any rain.
Concept used:-
- The boy has to hold the umbrella in direction of velocity of rain w.r.t velocity of the wind.
Solution:-
Let the angle be A.
So, tanA = Velocity of wind/velocity of rain
tanA = 12/35
tanA = tan(19.6°)
Comparing, we get
A = 19.6° .
So, the boy should hold the umbrella at an angle of 19.6° from vertical toward east.
So, the boy should hold the umbrella at an angle of 19.6° from vertical toward east.[Wind is coming from East to West]