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Test Applying Mechanical Reasoning Questions and Answers Flashcards

7 cards from real FCTC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Test Applying Mechanical Reasoning Questions and Answers flashcards as text

  1. A belt connects a small pulley (diameter 4 inches) to a large pulley (diameter 12 inches). If the small pulley turns at 900 RPM, what is the speed of the large pulley?

    Answer: 300 RPM

    Belt-driven pulley speed is inversely proportional to diameter; 900 × (4/12) = 300 RPM.

  2. When water flows through a pipe that narrows from 4 inches to 2 inches in diameter, what happens to the water's velocity?

    Answer: It quadruples

    By the continuity equation, velocity is inversely proportional to cross-sectional area; halving the diameter reduces area by 4×, so velocity quadruples.

  3. A third-class lever has the effort applied between the fulcrum and the load. Which of the following is an example of a third-class lever?

    Answer: Fishing rod

    A fishing rod is a third-class lever — the hand grips near the fulcrum (base), effort is applied in the middle, and the load (fish) is at the tip.

  4. Two identical blocks are connected by a rope over a frictionless pulley. Block A is on a flat surface and Block B hangs off the edge. What will happen?

    Answer: Block B falls and pulls Block A

    Block B's weight creates an unbalanced downward force, causing it to fall and pull Block A horizontally toward the pulley.

  5. A screw has 20 threads per inch. How many full turns are needed to advance the screw 1 inch into a piece of wood?

    Answer: 20 turns

    Each turn advances the screw one thread pitch; with 20 threads per inch, 20 full turns are needed to advance 1 inch.

  6. A ball rolls off a horizontal table and becomes a projectile. Which of the following is true during its flight?

    Answer: Horizontal speed remains constant

    With no air resistance, horizontal velocity is constant while vertical velocity increases due to gravity.

  7. A heavy crate sits on a rough floor. Which factor does NOT affect the friction force between the crate and the floor?

    Answer: The color of the crate

    Friction depends on the normal force (related to weight), surface materials, and coefficient of friction — color has no effect.