Grade 11Mechanics

a particle is projected at an angle of 30 to the horizontal and 2 sec later is moving in direction tan ^-1(1/4) to the horizontal for the first time . find its initial speed

apoorv roy

7 Years agoGrade 11

1 Answer

Sawan raj

6 Years ago

At the point where the angle is tan-1/4 the component of velocity in x direction will be ucos 30 and velocity in y direction will be usin30 - gt so it is eqaul ro usin30- 20

Tan-1/4 =usin30-20/ucos30

1/4 =usin30-20/ucos 30

U= 160/4-1.732

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a particle is projected at an angle of 30 to the horizontal and 2 sec later is moving in direction tan -1 (1/4) to the horizontal for the first time . find its initial speed

apoorv roy

1 Answer

Sawan raj

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