Rßng räc m k m k k m k m K 1 K 2 m 1 k m 2 m K 2 K 1 m K 1 K 2 GhÐp lß xo Bµi To¸n va ch¹m m K 1 K 2 m K 1 K 2 m K 1 K 2 m K 2 K 1 m K 1 K 2 m K 1 K 2 h m k M m h m h M m k k m 0 m v m 0 M k m M h m k k D m 0 v m 0 k m Con l¾c lß xo ®¬n m m 0 k 0 v m 0 k m M h m k Trªn MÆt ph¼ng nghiªng k m k m k m k m k D m D m k k 2 k 1 m Dông cô VÏ h×nh K 1 m m K 2 K 1 m K 2 K 1 x m K 2 K 1 (HV.1) (HV.2)(HV.3) . lß xo Bµi To¸n va ch¹m m K 1 K 2 m K 1 K 2 m K 1 K 2 m K 2 K 1 m K 1 K 2 m K 1 K 2 h m k M m h m h M m k k m 0 m v m 0 M k m M h m k k D m 0 v m 0 k m Con. k M m h m h M m k k m 0 m v m 0 M k m M h m k k D m 0 v m 0 k m Con l¾c lß xo ®¬n m m 0 k 0 v m 0 k m M h m k Trªn MÆt ph¼ng nghiªng k m k m k m k m k