On the decomposition of force, the following statement is correct: a. the decomposition of force should be carried out according to the actual effect of known force; B. the object on the inclined plane As for the decomposition of force, the following statement is correct A. The force should be decomposed according to the actual effect of the known force B. The gravity of an object on an inclined plane must be decomposed into the downward sliding force along the inclined plane and the downward positive pressure perpendicular to the inclined plane C. The parallelogram rule restricts the force to be decomposed into two components D. After the force is decomposed into component forces, the component forces and resultant forces should be included in the formula at the same time

On the decomposition of force, the following statement is correct: a. the decomposition of force should be carried out according to the actual effect of known force; B. the object on the inclined plane As for the decomposition of force, the following statement is correct A. The force should be decomposed according to the actual effect of the known force B. The gravity of an object on an inclined plane must be decomposed into the downward sliding force along the inclined plane and the downward positive pressure perpendicular to the inclined plane C. The parallelogram rule restricts the force to be decomposed into two components D. After the force is decomposed into component forces, the component forces and resultant forces should be included in the formula at the same time

A. The decomposition of force should be based on the actual effect of known force
B. In addition, even if the gravity is decomposed along the inclined plane and the vertical inclined plane, then the downward force of the vertical inclined plane is not called normal pressure, and the normal pressure is elastic, which is received by the inclined plane, so there are two mistakes of B
C. The parallelogram rule does not limit the number of components in the decomposition of forces, that is, the number of components can also be multiple. The specific number depends on the actual problem. So C is wrong
D. The resultant force and the component force are equivalent, so when we use the component force, we can't use the resultant force, and when we use the resultant force, we can't use the component force. That is to use the component force and the resultant force is to use the resultant force twice