
#1
Sep1310, 01:30 AM

P: 1

1. The problem statement, all variables and given/known data
In an electricity experiment, a 1.30 g plastic ball is suspended on a 54.0 cm long string and given an electric charge. A charged rod brought near the ball exerts a horizontal electrical force vector F elec on it, causing the ball to swing out to a 21.0 angle and remain there. 1.) What is the magnitude of vector F? 2.)What is the tension in the string? Any help would be appreciated! 3. The attempt at a solution I honestly have no idea how to start it. A step by step on how to solve it would be nice but any help is appreciated. 



#2
Sep1310, 03:28 AM

HW Helper
P: 1,584

Draw a picture, put the forces on and resolve.



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