March 29, 2017

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Two small metal spheres with masses 2.0 g and 4.0 g are tied together by a 5.0 cm long massless
string and are at rest on a frictionless surface. Each is charged to +2.0 ìC.

(b) What is the tension in the string?
(c) The string is cut. What is the speed of each sphere when they are far apart?

  • PHYSICS - ,

    tension= force repulsion= kQ1*Q2/distance^2

    when cut, then T=ma or a= tension/mass

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