Mechanics Exam NEIEP 2025 – Study Guide

Mechanics Exam NEIEP 2025 – Study Guide Main Topics Covered 1. Forces & Newton’s Laws 2. Work, Energy, and Power 3. Simple Machines (Levers, Pulleys, Gears, Inclined Planes, etc.) 4. Torque and Rotational Motion 5. Mechanical Advantage & Efficiency 6. Friction and Motion on Surfaces 7. Kinematics (Velocity, Acceleration, Free Fall) 8. Statics and Equilibrium 9. Hydraulics & Pneumatics (Pascal’s Law, Pressure) 10. Safety & Practical Applications in Elevator/Mechanical Systems ________________________________________ Sample Questions & Answers (Multiple Choice) 1. Newton’s Laws of Motion Q1. Which of Newton’s laws states that an object will remain at rest or in uniform motion unless acted upon by an external force? a) First Law b) Second Law c) Third Law d) Law of Gravitation Answer: a) First Law Q2. A 50 kg load is lifted with an acceleration of 2 m/s². What is the net force required? a) 100 N b) 200 N c) 300 N d) 400 N Answer: c) 300 N ________________________________________ 2. Work, Energy & Power Q3. Work is defined as: a) Force × Distance × Time b) Mass × Acceleration c) Force × Distance d) Power × Time Answer: c) Force × Distance Q4. A motor does 6000 J of work in 30 seconds. What is its power output? a) 100 W b) 150 W c) 200 W d) 250 W Answer: c) 200 W ________________________________________ 3. Simple Machines Q5. The purpose of a simple machine is to: a) Increase the amount of work done b) Reduce work c) Multiply or change the direction of force d) Eliminate energy loss Answer: c) Multiply or change the direction of force Q6. If a pulley system has a mechanical advantage (MA) of 4, a 200 N load can be lifted by applying a force of: a) 400 N b) 50 N c) 100 N d) 800 N Answer: b) 50 N ________________________________________ 4. Torque & Rotational Motion Q7. Torque is calculated as: a) Force × Distance × Acceleration b) Force ÷ Distance c) Force × Lever Arm (perpendicular distance) d) Work ÷ Time Answer: c) Force × Lever Arm (perpendicular distance) Q8. A 20 N force applied 0.5 m from a pivot creates what torque? a) 5 Nm b) 10 Nm c) 20 Nm d) 40 Nm Answer: b) 10 Nm ________________________________________ 5. Friction Q9. The force of friction depends on: a) Surface area and velocity b) Mass and acceleration c) Normal force and coefficient of friction d) Work and energy Answer: c) Normal force and coefficient of friction Q10. Reducing friction in elevator machinery improves: a) Torque only b) Safety only c) Efficiency and lifespan d) None of the above Answer: c) Efficiency and lifespan ________________________________________ 6. Hydraulics & Pneumatics Q11. Pascal’s law states: a) Energy cannot be created or destroyed b) Pressure applied to a confined fluid is transmitted equally in all directions c) Torque equals force × distance d) Action equals reaction Answer: b) Pressure applied to a confined fluid is transmitted equally in all directions Q12. If a hydraulic piston with an area of 0.02 m² is subjected to a force of 100 N, what is the pressure? a) 2000 Pa b) 5000 Pa c) 10000 Pa d) 20000 Pa Answer: b) 5000 Pa ________________________________________