Final answer:
The question deals with a military support relationship, often established through a security pact where one force supports another upon request. This is a strategic concept related to international relations and defense mechanisms in Social Studies.
Step-by-step explanation:
The question refers to a support relationship in a military or strategic context, where a force is required to provide assistance to another specific force upon request. This concept is related to military tactics and alliances, often formalized through mechanisms like a security pact. In such an agreement, multiple parties agree to back each other up in the case of a military attack, and this requires a coordinated effort where one force can directly support another. This idea of mutual support may also be extended to include concepts like tension, thrust, and weight in terms of physical forces in physics, but in the context of the question, it is more aligned with the principles of international relations and defense.