Question

friction graphs 18 fill in the blank 2 points use the given information & the graph shown in this section to answer the following question. a box with a mass of 18.0 kg is being pushed on a level surface with a horizontally applied force. if the box is sliding on the surface and the applied force is 90.0 n, how much will the magnitude of the friction force be? type your answer.

Explanation:

Step1: Analyze the graph

The graph shows the relationship between friction force and applied force. When the box is sliding, the friction force is in the kinetic - friction region. In this region, the friction force is constant and does not depend on the applied force (as long as the object is sliding). From the graph, we can see that when the box is in the sliding phase, the friction force value is read from the horizontal part of the graph.

Step2: Read the value from the graph

By observing the graph, when the box is sliding and the applied force is large enough to keep it sliding (in this case, 90.0 N), the magnitude of the friction force is 40 N.

Answer:

40 N