A toy is made with cardboard and rivets. As shown below, the two car cut-outs are attached on top of the parallel cardboard strips which should move when the child pushes or pulls the horizontal cardboard strip. Different linkage mechanisms are made with cardboard strips (rectangles) and connector pivots (circles). Black circles are fixed pivots (attached to the grey base) and white circles are moving pivots (not attached to the grey base). Which option will show a collision between the two cars?
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When analyzing linkage mechanisms, focus on the movement of the pivots and how the connected parts interact with each other. This can help predict when a collision might occur.
Step 1: Understanding the mechanism.
The toy uses cardboard strips and pivots to create movement when pushed or pulled. The black circles are fixed pivots, and the white circles are movable pivots. The goal is to identify the configuration that results in a collision between the two cars. Step 2: Analyzing the options. (A) Option A: This does not show a collision as the mechanism does not allow the cars to meet. (B) Option B: This is correct, as it shows the linkage mechanism causing the two cars to collide. (C) Option C: This does not cause a collision between the cars. (D) Option D: This also does not result in a collision between the cars. Step 3: Conclusion.
The correct answer is (B) because it shows the linkage mechanism leading to a collision between the two cars.
