Question

Consider the block arrangement for the following situations: (a) Block moving upward at constant speed (b) Block moving downward at constant speed (c) Block moving upward, speed decreasing (d) Block moving upward, speed increasing (e) Block stationary

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i dont understand the question. help.

Example 5.2.1 Sample Problem Block accelerating vertically This first figure shows a vertically moving block on the end of a cord. Example 5.2.1 Figure 1 This second figure gives the vertical velocity component vy as a function of time (m/s) Example 5.2.1 Figure 2 Let's assume that we can read values from the graph to two significant figures. The block's mass is 5.0 kg. We want to find the tension in the cord. KEY IDEAS 1. The forces acting on the block produce a net force Fnet 2. The net force is related to the acceleration a by Newton's second law (Fe -ma). 3. The forces and motion are along only the vertical y axis, so we can write the law in component form as Fnety ma 1 Calculations This third figure gives a free body diagram for the block, in which T is the upward force on the block from the cord (the tension force) and mg is the downward gravitational force on the block. mg Example 5.2.1 Figure 3 Note that the tails of the force vectors are anchored on the dot representing the block. Consider the block arrangement for the following situations: (a) Block moving upward at constant speed (b) Block moving downward at constant speed ) Block moving upward, speed decreasing (d) Block moving upward, speed increasing (e) Block stationary Rank the situations according to the magnitude of the tension in the cord. Indicate the ranking by moving the labels into the boxes, with the greatest magnitude at the top left. Use side- by-side boxes for any ties, arranged in alphabetic order.

Answer 1

z nmg Vta V rn allb