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.
541
An object has potential energy of 400 J and mass 20 kg. Find its height. (g = 10 m/s²)
RRB Group D
28/09/2018 / Shift-I
2018
✓ Answer:D2 m
h = U/(mg) = 400/(20 × 10) = 2 m.
542
Which form of energy is not generated while riding a bicycle?
RRB ALP & Technician
10/08/2018 / Shift-I
2018
✓ Answer:AChemical energy
Cycling uses stored chemical energy and produces mechanical motion and heat; chemical energy is consumed rather than generated.
543
A 10 kg object moves at 2 m/s. Find its kinetic energy.
RRB Group D
27/09/2018 / Shift-I
2018
✓ Answer:D20 J
K = (1/2) × 10 × 2² = 20 J.
544
A 15 kg hammer is raised 10 m. Find its potential energy.
RRB Group D
05/10/2018 / Shift-I
2018
✓ Answer:A1500 J
Using g = 10 m/s², U = 15 × 10 × 10 = 1500 J.
545
An 11 kg object moves at 5 m/s. Find its kinetic energy.
RRB Group D
10/10/2018 / Shift-II
2018
✓ Answer:B137.5 J
K = (1/2) × 11 × 5² = 137.5 J.
546
Find the kinetic energy of a 2 kg ball moving at 30 m/s.
RRB Group D
04/10/2018 / Shift-II
2018
✓ Answer:B900 J
K = (1/2) × 2 × 30² = 900 J.
547
A 15 kg object moves uniformly at 5 m/s. Find its kinetic energy.
RRB Group D
08/10/2018 / Shift-II
2018
✓ Answer:A187.5 J
K = (1/2) × 15 × 5² = 187.5 J.
548
A 12 kg object has potential energy of 600 J. Find its height above the ground.
RRB Group D
22/10/2018 / Shift-I
2018
✓ Answer:C5 m
Using g = 10 m/s², h = 600/(12 × 10) = 5 m.
549
A 12 kg object has potential energy of 480 J. Find its height above the ground.
RRB Group D
03/10/2018 / Shift-II
2018
✓ Answer:C4 m
Using g = 10 m/s², h = U/(mg) = 480/(12 × 10) = 4 m.
550
Which energy increases with speed?
RRB Group D
24/10/2018 / Shift-I
2018
✓ Answer:CKinetic energy
K = (1/2)mv² increases with the square of speed for fixed mass.
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