A block slides down a frictionless inclined plane that makes an angle θ with the horizontal.

Which of the expressions shown below expresses force which is parallel to the inclined surface?

The normal force equals

A 25 N crate slides down a frictionless incline that is 25° above the horizontal. The magnitude of the normal force of the incline on the crate is:

A heavy wooden block is dragged by a force F along a rough steel plate, as shown in the diagrams for two cases. The magnitude of the applied force F is the same for both cases. The normal force in (ii), as compared with the normal force in (i) is:

A 25 N crate is held at rest on a frictionless incline by a force that is parallel to the incline. The incline is 25 degrees above the horizontal.

The magnitude of the applied force is ________

A 25 N crate is held at rest on a frictionless incline by a force that is parallel to the incline. The incline is 25 degrees above the horizontal.