Cho cơ hệ như hình vẽ. Bỏ qua khối lượng các ròng rọc và ma sát giữa các mặt tiếp xúc.
(a) Tìm mối liên hệ giữa a1 và a2.
(b) Xác định biểu thức các lực căng dây, a1, a2

harry byrd declared organized resistance by southern states would prevent racial integration.

increase masses, decrease separation

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

i think it would be 5