Practice Test GeeksOAR Test Practice Test
← All OAR Flashcard Decks

OAR Mechanical Comprehension: Forces Questions and Answers Flashcards

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

Read the first 6 OAR Mechanical Comprehension: Forces Questions and Answers flashcards as text

  1. A 10 kg box is pushed across a floor with a force of 50 N while friction exerts 20 N in the opposite direction. What is the net force acting on the box?

    Answer: 30 N in the direction of the push

    Net force equals applied force minus friction: 50 N − 20 N = 30 N in the direction of the push.

  2. Two forces act on an object: 8 N to the east and 6 N to the north. What is the magnitude of the resultant force?

    Answer: 10 N

    Using the Pythagorean theorem, the resultant is √(8² + 6²) = √(64 + 36) = √100 = 10 N.

  3. A 5 kg object hangs motionless from a rope attached to the ceiling. What is the tension in the rope? (g = 9.8 m/s²)

    Answer: 49 N

    The tension equals the weight of the object: T = mg = 5 × 9.8 = 49 N.

  4. According to Newton's Third Law, when a hammer strikes a nail, how does the force the nail exerts on the hammer compare to the force the hammer exerts on the nail?

    Answer: Equal in magnitude but opposite in direction

    Newton's Third Law states that action and reaction forces are always equal in magnitude and opposite in direction.

  5. A spring with a spring constant of 200 N/m is compressed 0.15 m from its natural length. What force does the spring exert?

    Answer: 30 N

    By Hooke's Law, F = kx = 200 × 0.15 = 30 N.

  6. An object weighing 80 N sits on a ramp inclined at 30° above the horizontal. What is the component of the gravitational force acting parallel to the ramp surface?

    Answer: 40 N

    The parallel component equals W × sin(30°) = 80 × 0.5 = 40 N.