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General
Easy
Question
A stone projected with a velocity U at an angle 
with the horizontal reaches maximum height H1, when it is projected with velocity U at an angle 
with the horizontal reaches maximum height H2 The relation between horizontal range R of the projectile, H1 and H2 is...
The correct answer is:
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Two particles A and B are projected simultaneously in the directions shown in figure with velocities 
and 
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Find the angle at ‘A’ with horizontal.
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Find the direction of the boat with the vertical.
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A plank is moving on the ground with velocity ‘V1 ’ and a block is moving on the plank with velocity ‘V2 ’ relative to the plank. What will be the actual velocity of the block.
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If two cars A and B are travelling with velocities 4m/s and 3m/s in same direction then velocity of car A with respect to car B is ..
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Reason : The frictional force acts only when the bodies are in contact.
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Block A weighing 100 kg rests on a block B and is tied with a horizontal string on the wall at C. Block B weighs 200 kg. The coefficient of friction between A and B is 0.25 and between B and the surface is 1/3. The horizontal force P necessary to move the block B should be (g = 10 m/s2) :
Block A weighing 100 kg rests on a block B and is tied with a horizontal string on the wall at C. Block B weighs 200 kg. The coefficient of friction between A and B is 0.25 and between B and the surface is 1/3. The horizontal force P necessary to move the block B should be (g = 10 m/s2) :
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A body of weight 50 N placed on a horizontal surface is just moved by a force of 28.2 N. The frictional force and the normal reaction are :
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