2006-09-14 03:44:59 · 4 answers · asked by wildbutterflychick 2 in Science & Mathematics ➔ Physics
the force diagram of an object at rest will have a 0 net external force.
In this case the stone has a F_t (force of tension) from the string, and a F_g or mg (mass times gravity) or the force due to gravitiational acceleration. and they are eqqal and opposite.
2006-09-14 04:40:04 · answer #1 · answered by farrell_stu 4 · 0⤊ 0⤋
There are only two forces acting on the stone. Weight w acting down ward and tension in string acting exactly upwards and equal in magnitude to the weight. So the vector diagram consists of two overlapping vertical lines of same magnitude but opposite direction.Hence they cancel out with the resultant being Zero.
2006-09-14 03:50:14 · answer #2 · answered by openpsychy 6 · 0⤊ 0⤋
Erm.I'm guessing you mean that is the resultant velocity of the stone is zero. If so,yes. As you said,the stone is at rest,which means its not moving.
2006-09-14 03:49:34 · answer #3 · answered by Cheng J 2 · 0⤊ 0⤋
Yes, because if there were a net force acting on the stone then it would respond to the force by moving.
2006-09-14 03:48:01 · answer #4 · answered by bruinfan 7 · 0⤊ 0⤋