College Physics

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A charged particle is hanging from the side of a wall by means of an uncharged string. The wall has a negative charge producing a horizontal electric field. The particle has a mass of .01 Kg. and charge of -80(micro)C and is suspended by a string .3m long. The electric force on the ball is .032N. What forces are acting on the ball? What is the magnitude and direction of ball? How far away is the ball from the wall? When the strong is cut 1) What is acceleration and magnitude? 2) Describe the path of the ball.

  • College Physics -

    Electric and gravitational forces are on the ball. Electric horizontal, gravity vertical

    measuring theta from the wall, the string hangs at tanTheta= electricforce/mg= Eq/mg

  • College Physics -

    Thank you,
    How would I calculate acceleration and magnitude once the ball is cut?

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