Dynarnics 8 17-1 General equation of dynamics Suppose that there are n particles in a system, particle i being described by m,E, M,a, 0=-m a. Then we have F2+N1+Q;=0 If the system of particle is under the action of the ideal constraints, the Q can be treated as positive forces and we get ∑(F+)=0 The explicit form is ∑(X1-m1x)1+(H-m2)C+(∠1-m1三)D]=0 This is the general equation of dynamics. 77 mi Fi Ni ai Qi = −mi ai , , , ; Suppose that there are n particles in a system, particle i being described by . Then we have Fi +Ni +Qi =0 If the system of particle is under the action of the ideal constraints, the can be treated as positive forces and we get Qi ( + ) i =0 i i F Q r The explicit form is [(Xi −mi  x  i )xi +(Yi −mi  y  i )yi +(Zi −mi  z  i )zi ]=0 §17-1 General equation of dynamics This is the general equation of dynamics