Question

Why does a large rock not move even if we apply force on it?

Answer 1

Answer:

as the rock has a larger mass and more than its volume

thus density =mass/volume

as denominator is lesser the whole density increses and thus we can not lift it by applying a small force

Answer 2

Answer:

when. a large rock does not move in this case. you don't see it distort because it is massive. But it distorts elastically microscopically in just the same way as the spring. That's where your energy is used up, in holding the rock in an elastically distorted shape, until you stop pushing.