If α and u are the angle of projection and initial velocity of a projectile respectively, the horizontal range of the projectile, is
u² sin α/g
u² sin² α/g
u² sin α/2g
u² sin² α/2g
Correct Answer :
A. u² sin α/g
Related Questions
Lami's theorem states that
Three forces acting at a point are always in equilibrium
If three forces acting on a point can be represented in magnitude and direction by the sides of a triangle, the point will be in the state of equilibrium
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Three coplanar forces acting at a point will be in equilibrium if each force is inversely proportional to the sine of the angle between the other two
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30 sec
20 sec
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Which one of the following laws is not applicable to a simple pendulum?
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The total kinetic energy of a hoop of mass 2 kg and radius 4 m sliding with linear velocity 8 m/sec and angular velocity 5 radian/sec is
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400 J
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Only (i)
Both (ii) and (iii)
Both (i) and (iii)
All are correct
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6t - 2
6t + 2
A glass ball is shot to hit a wall from a point on a smooth floor. If the ball returns back to the point of projection in twice the time taken in reaching the wall, the coefficient of restitution between the glass ball and the wall is
0.25
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0.50
If two forces acting at a point are in equilibrium, they must be equal in magnitude and their line of action must be along
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The same line in opposite sense
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45°
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75°
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v = ω √(r² - y²)
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Only the closure of funicular polygon is sufficient
Both force polygon and funicular polygon must close
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r/ω²
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Zero
Infinite
gr
2gr