Maths-
General
Easy
Question
The projection of the vector on the vector is
The correct answer is:
Projection of on will be
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If (2 + P + 2) is perpendicular to then value of P is
If (2 + P + 2) is perpendicular to then value of P is
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A particle of mass is projected with a velocity making an angle of with the horizontal. The magnitude of angular momentum of the projectile about the point of projection when the particle is at its maximum height is
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A car rounds an unbanked curve of radius 92 m without skidding at a speed of . The smallest possible coefficient of static friction between the tyres and the road is
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A body of mass is rotating in a vertical circle at the end of a string of length metre. The difference in the kinetic energy at the top and bottom of the circle is
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A cyclist is travelling on a circular section of highway of radius 2500 ft at the speed of 60 mile . The cyclist suddenly applies the brakes causing the bicycle to slown sown at constant rate. Knowing that after 8 s the speed has been reduced to . The acceleration of the bicycle immediately after the brakes have been applied is
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A coastguard ship locates a pirate ship at a distance . It fires a cannon ball with an initial speed . At what angle from horizontal the ball must be fired so that it hits the pirate shi
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A gramophone disc is set revolving in a horizontal plane and reaches a steady state of motion of two revolutions per second. It is found that a small coin placed on the disc will remain there if its centre is not more than 5 cm from the axis of rotation; the coefficient of friction between the coin and the disc is
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A wheel is subjected to uniform angular acceleration about its axis. Initially its angular velocity is zero. In the first , it rotates through an angle . In the next , it rotates through an additional angle . The ratio of is
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A car is moving along a straight horizontal road with a speed. If the coefficient of friction between tyres and the road is , the shortest distance in which the car can be stopped is
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A particle is moving with velocity , where is a constant. The general equation for its path is
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A car is moving with high velocity when it has a turn. A force acts on it outwardly because of
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A boy whirl is a stone in a horizontal circle of radius 1.5 m and at height 2.0 m above level ground. The string breaks and the stone flies off tangentially and strikes the ground after traveling a horizontal distance of 10 m. What is the magnitude of the centripetal acceleration of the stone while in circular motion?
A boy whirl is a stone in a horizontal circle of radius 1.5 m and at height 2.0 m above level ground. The string breaks and the stone flies off tangentially and strikes the ground after traveling a horizontal distance of 10 m. What is the magnitude of the centripetal acceleration of the stone while in circular motion?
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A string of length is fixed at one end and the string makes rev/s around the vertical axis through, the fixed and as shown in the figure, then tension in the string is
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A pallet of mass 1 g is moving with an angular velocity of 1 along a circle of radius 1 m the centrifugal force is
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