# Where am I going wrong with this problem?

Tags: None
 P: 27 The four 1.0 g spheres shown in the figure are released simultaneously and allowed to move away from each other. Here's my attempt at a solution. All sphere's have same charge and are situated in a square. Thanks.
 Mentor P: 37,585 I'm assuming you are asked for the final velocity of each of the masses with respect to the stationary frame of reference. One error I see, 1g does not equal 0.0001kg. The rest of your approach looks reasonable.
 P: 27 Thanks, corrected the mass (silly me) and recalculated. Computer still doesn't like this answer??? Any ideas?
Mentor
P: 37,585

## Where am I going wrong with this problem?

I'm getting a different exponent on the potential energy terms. Maybe check your units in each of the equations to be sure you are using mks throughout. (Of course I may be calculating the potential energies wrong as well.)
 P: 27 My goodness it is questions like these that make me so angry. Just got an email back from my Prof he said I need to think about all the pairs in the problem. So I needed to take into account all six pairs in the problem (1 on 2, 1 on 3, 1 on 4, 2 on 3, 2 on 4, and 3 on 4). Got the answer correct now thanks for all your help.

 Related Discussions Introductory Physics Homework 6 Introductory Physics Homework 1 Current Events 6