Question

An object weighing 24N is placed on a 30 degrees slope. Solve the component of weight acting parallel to the slope.

Answer 1

Answer:

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Step-by-step explanation:

Recall from the previous chapter that friction is a force that opposes motion, and is around us all the time. Friction allows us to move (which you have discovered if you have ever tried to walk on ice).

There are different types of friction—kinetic and static. Kinetic friction acts on an object in motion, while static friction acts on an object or system at rest. The maximum static friction is usually greater than the kinetic friction between the objects.

Imagine, for example, trying to slide a heavy crate across a concrete floor. You may push harder and harder on the crate and not move it at all. This means that the static friction responds to what you do—it increases to be equal to and in the opposite direction of your push. But if you finally push hard enough, the crate seems to slip suddenly and starts to move. Once in motion, it is easier to keep it in motion than it was to get it started because the kinetic friction force is less than the static friction force. If you were to add mass to the crate, (for example, by placing a box on top of it) you would need to push even harder to get it started and also to keep it moving. If, on the other hand, you oiled the concrete you would find it easier to get the crate started and keep it going.

Figure shows how friction occurs at the interface between two objects.