Maths-
General
Easy
Question
In a model, it is shown that an arch of abridge is semi-elliptical with major axis horizontal. If the length of the base is 9 m and the highest part of the bridge is 3 m from the horizontal, the best approximation of the height of the arch, 2 m from the centre of the base is
- 2 m
The correct answer is: 
Related Questions to study
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chemistry-
Assertion :this equilibrium favours backward direction.
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is stronger base than 
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physics-
Two small particles of equal masses start moving in opposite directions from a point A in a horizontal circular orbit. Their tangential velocities are
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physics-General
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The trajectory of a particle moving in vast maidan is as shown in the figure. The coordinates of a position
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physics-General
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The potential energy of a particle varies with distance
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physics-General
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A
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= Mass
A
mass moves along
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to 

physics-General
Work done = Area covered in between force displacement curve and displacement axis
= Mass
Area covered in between acceleration-displacement curve and displacement axis

= Mass
physics-
A mass
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By applying law of conservation of energy

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physics-General
By applying law of conservation of energy

physics-
Three forces of magnitudes 6N, 6N and
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N along 
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N along
and
N along
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.
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physics-General
The resultant of 5 N along
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N along 
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N along
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N along
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The resultant of
physics-
A man standing on a hill top projects a stone horizontally with speed
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Here,
and 


Now
and
Here,

Now
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physics-General
Range of the projectile on an inclined plane (down the plane) is,

Here,
and 


Now
and
Here,

Now
and
physics-
A particle is acted upon by a force
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as shown in the figure. If the particle at
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is

Work done
Area under
-
graph with proper sign
Area of triangle
+ Area of rectangle
+ Area of rectangle
+ Area of 


….(i)
According to work energy theorem


[Using (i)]

According to work energy theorem
A particle is acted upon by a force
which varies with position
as shown in the figure. If the particle at
has kinetic energy of 25 J, then the kinetic energy of the particle at
is

physics-General
Work done
Area under
-
graph with proper sign
Area of triangle
+ Area of rectangle
+ Area of rectangle
+ Area of 


….(i)
According to work energy theorem


[Using (i)]

According to work energy theorem