Science Buddies: "Ask an Expert"

Let us soppose an object(eg. Helicopter ) . That object is flying at a fixed point in the air over building A and is nor changing its position neither moving towards any direction, Just flying at a fixed over building A . So my question is that, is it possible that after few minutes/hours the position of the object will automatically change because the earth is moving that is that object which was earlier flying over building A after some time will not be flying over building A although it haven't moved in any direction but the earth below it moved which caused the building A to move beneath the object.

Hi Saydyn saad,

Welcome to the Ask an Expert forums! To first order, the lower part of Earth's atmosphere is well-coupled to the motion of the solid Earth. The helicopter, in turn, is well-coupled to the motion of the lower atmosphere. As a result, the helicopter is indirectly coupled to the Earth's rotation (via the lower atmosphere) and will, to first order, rotate with the Earth. To first order, the position of the helicopter above the building will not change.

Thanks Terik , but it's there any way to prevent the object from moving along the Earth's rotation..

Hi Saydyn saad,

Can you provide some more details about what your project is? I'm not sure I understand your question. It would be very helpful to know what hypothesis you are planning to test. Or, if you are doing an engineering project, what your design goals will be. Post back with additional details, and we will be better able to help you.