Calculating the Speed of a Suspended Ball at 90 Degrees | Physics Homework Help

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To calculate the speed of a suspended ball at a 90-degree angle, one must consider the forces acting on the ball, specifically gravity and a horizontal force equal to the ball's weight. The ball's motion can be analyzed using kinematic equations by separating the x and y components of position, velocity, and acceleration. The tension in the string and the gravitational force will influence the ball's trajectory and speed as it reaches the specified angle. Understanding these dynamics is crucial for deriving the speed in terms of the string length L and gravitational acceleration g. A structured approach to the equations of motion is essential for solving this physics problem.
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Homework Statement



a ball of mass m is attached to a light string of length L and suspended vertically. A constant force, which magnitude F equals the weight of the ball, is applied horizontally to the ball. Determine the speed of the ball as t reaches the 90degree level in terms of L and g= 10 m/s^2

Homework Equations



not sure really!

http://img132.imageshack.us/img132/7374/phyiscsek4.jpg

The Attempt at a Solution



I honestly do not have a clue where to start on this question. Can anyone give me a start?
 
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desperately need help! :(
 
Write the equations of motion for the ball. The string constrains how it moves, and the two forces acting on it are gravity downward and the horizontal pushing force. What are the kinematic motion equations that you should start with? Use x and y coordinates to separate the two components of position, velocity and acceleration...
 

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