A peacock sitting at the top of a 3 meter high pole saw a snake approaching towards pole at a distance three times of the height of the pole. Then it jumping from pole will catch the snake at what distance from the pole if both are running with same speed ?
The question describes a scenario involving a peacock on top of a pole and a snake approaching its base. Both animals move at the same speed, and we need to find the distance from the pole where the peacock catches the snake after jumping from the pole.
Let's break down the information given:
We need to find the distance from the base of the pole where the catch occurs.
Let's denote the point at the base of the pole as B, the top of the pole as T, and the initial position of the snake as S. Let the point where the peacock catches the snake be C. The point C will be on the line BS (the snake's path towards the pole).
The initial distance BS is 9 meters. Let the distance from the pole base B to the point of capture C be $y$ meters. This is the distance we want to find.
The snake starts at S and moves towards B, reaching C. The distance the snake travels is SC. Since B is between S and C (or C is between S and B), and BC is $y$, the distance the snake travels is $SC = BS - BC = 9 - y$ meters.
The peacock starts at T and moves towards C. The path of the peacock is the line segment TC. The height BT is 3 meters. Triangle TBC is a right-angled triangle with the right angle at B.
Using the Pythagorean theorem in triangle TBC, the distance the peacock travels (TC) is given by:
$\text{TC}^2 = \text{TB}^2 + \text{BC}^2$
$\text{TC}^2 = h^2 + y^2$
$\text{TC} = \sqrt{h^2 + y^2} = \sqrt{3^2 + y^2} = \sqrt{9 + y^2}$ meters.
Both the peacock and the snake move for the same amount of time, let's call it $t$, from the moment the peacock sees the snake until it catches it. Since they move at the same speed $v$, the distance covered by each must be equal.
Distance covered by snake (SC) = $v \times t$
Distance covered by peacock (TC) = $v \times t$
Therefore, $\text{SC} = \text{TC}$.
Substituting the distances we found:
$9 - y = \sqrt{9 + y^2}$
We need to solve the equation $9 - y = \sqrt{9 + y^2}$ for $y$.
Square both sides of the equation to eliminate the square root:
$(9 - y)^2 = (\sqrt{9 + y^2})^2$
$(9 - y)(9 - y) = 9 + y^2$
Expand the left side (using $(a-b)^2 = a^2 - 2ab + b^2$):
$9^2 - 2(9)(y) + y^2 = 9 + y^2$
$81 - 18y + y^2 = 9 + y^2$
Subtract $y^2$ from both sides of the equation:
$81 - 18y = 9$
Subtract 9 from both sides:
$81 - 9 = 18y$
$72 = 18y$
Divide by 18 to find $y$:
$y = \frac{72}{18}$
$y = 4$
The distance from the base of the pole where the peacock catches the snake is 4 meters.
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