Oh. In that case I suppose it would be logical for one mass to have twice the charge of the other. Therefore using a=eq/m, q and m are both twice as large so the acceleration should be equal for both, leading to B. Is that correct?
Thanks a lot! :)
Confused indeed!
Not entirely sure what you mean...
The spheres are suspended so the downward force, gravitational, equals the upwards force, electrical. So eq=mg? Thus F = 0, so ma = 0, so a must be zero.
But why, when the electrical field is made stronger, do they accelerate equally...
Homework Statement
The diagram shows two charged spheres X and Y, of masses 2m and m respectively, which are just prevented from falling under gravity by the uniform electric field between the two parallel plates.
If the plates are moved closer together
A X and Y will both remain...