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.
661
Which can be an effect of balanced forces acting on an object?
RRB Group D
04/12/2018 / Shift-III
2018
✓ Answer:AChange in shape
Balanced forces give zero net translational acceleration but can deform an object. They do not always change its shape.
662
A constant force acts on an 8 kg object for 2 s and increases its velocity from 4 m/s to 9 m/s. Find the force.
RRB Group D
24/09/2018 / Shift-II
2018
✓ Answer:C20 N
F = 8(9 − 4)/2 = 20 N.
663
Mass × acceleration = ?
RRB Group D
25/09/2018 / Shift-II
2018
✓ Answer:AForce
F = ma.
664
What is a push or pull on an object called?
RRB Group D
10/10/2018 / Shift-II
2018
✓ Answer:BForce
A force is a push or pull resulting from an interaction.
665
A 10 kg object is free to move under a force of 10 N. Which statement applies?
RRB ALP & Technician
29/08/2018 / Shift-III
2018
✓ Answer:CIt accelerates at 1 m/s².
a = F/m = 10/10 = 1 m/s².
666
Forces between two interacting bodies are always ______.
RRB Group D
16/10/2018 / Shift-III
2018
✓ Answer:AEqual and opposite
Newton's third law states that interaction forces are equal in magnitude and opposite in direction.
667
If an object is held and pulled at both ends, the force applied is called ______.
RRB Group D
16/10/2018 / Shift-I
2018
✓ Answer:DStretch
Pulling at opposite ends tends to stretch the object and produces tension.
668
______ is an interaction between two objects.
RRB Group D
05/12/2018 / Shift-III
2018
✓ Answer:DForce
A force arises from the interaction of two objects.
669
A constant force acts on a 5 kg object for 2 s, increasing its velocity from 4 m/s to 7 m/s. Find the force.
RRB Group D
28/09/2018 / Shift-III
2018
✓ Answer:C7.5 N
F = m(v − u)/t = 5(7 − 4)/2 = 7.5 N.
670
What is the force exerted by a solid surface perpendicular to the surface called?
RRB Group D
01/12/2018 / Shift-II
2018
✓ Answer:ANormal force
The perpendicular contact force is called the normal force.
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