Mechanics RRB PYQ – Physics Previous Year Questions
Practice Mechanics RRB PYQ questions from Railway examinations, including RRB NTPC PYQ, RRB Group D PYQ, RRB JE PYQ, RRB ALP PYQ and RRB Technician PYQ. This topic-wise Physics question set covers important concepts related to work, power, energy, mass, force, Newton’s laws of motion, momentum, distance, displacement, speed, velocity, acceleration, equations of motion, friction and motion, helping you revise essential Physics concepts for RRB examinations.
Each question includes the correct answer and an explanation to help you understand the concept, strengthen your Physics fundamentals, and revise important Mechanics topics for RRB Railway examinations.
Start practicing Mechanics RRB PYQs and strengthen your Physics preparation.
291
Which expression gives the work done by a variable force?
RRB Technician Grade-I
19/12/2024 / Shift-II
2024
✓ Answer:BW = ∫F dx
Work by a variable force is the integral of the force component along the displacement: W = ∫F dx.
292
Find the work done by a man standing on a platform holding a 10 kg suitcase.
RRB ALP & Technician
21/08/2018 / Shift-I
2018
✓ Answer:B0 J
There is no displacement, so mechanical work is zero.
293
Rahul moves a book through a distance D in the direction of the applied force. What is the work done by the force?
A force does work when it produces displacement with a component along the force.
300
A 5 kg object is pushed 10 metres by a horizontal force of 20 N on a rough surface with coefficient of kinetic friction 0.2. Find the net work. (g = 10 m/s²)
RRB Technician Grade-I
19/12/2024 / Shift-I
2024
✓ Answer:A100 J
Friction = μmg = 0.2 × 5 × 10 = 10 N. Net work = (20 - 10) × 10 = 100 J.
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