Auniform 1.0-n meter stick is suspended horizontally by vertical strings attached at each end. a 2.0-n weight is suspended from the 10-cm position on the stick, another 2.0-n weight is suspended from the 50 cm position, and a 3.0-n weight is suspended from the 60 cm position. what is the tension in the string attached at the 100-cm end of the stick?

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.