Physics ยท Science General

Newtonian Mechanics and Forces

1,605 Questions

Newtonian mechanics studies the motion of objects and the physical laws governing them. This hub covers friction, gravitational force, inertia, and vector quantities. Mastering these fundamental physics concepts is essential for various government competitive exams.

Laws of motionFriction and inertiaVector and scalar quantitiesGravitational accelerationArchimedes principle

Newtonian Mechanics and Forces Questions

Multiple choice

What is the maximum allowable center of gravity position for an aircraft?

  1. Forward limit.

  2. Aft limit.

  3. Neutral point.

  4. Datum point.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The maximum allowable center of gravity position for an aircraft is the aft limit, which is the most rearward point within the center of gravity envelope.

Multiple choice

What is the term used to describe the difference between the actual center of gravity position and the forward limit of the center of gravity envelope?

  1. Center of gravity margin.

  2. Weight and balance margin.

  3. Moment arm margin.

  4. Datum point margin.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Center of gravity margin is the difference between the actual center of gravity position and the forward limit of the center of gravity envelope. It represents the amount of weight that can be shifted forward without exceeding the forward limit.

Multiple choice

Which of the following is not a fundamental force in physics?

  1. Gravitational force

  2. Electromagnetic force

  3. Strong nuclear force

  4. Weak nuclear force

  5. Centrifugal force
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Centrifugal force is not a fundamental force in physics. It is an inertial force that arises due to the rotation of an object.

Multiple choice

Which of the following is NOT a type of balance in layout and composition?

  1. Symmetrical balance

  2. Asymmetrical balance

  3. Radial balance

  4. Dynamic balance
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Dynamic balance is not a type of balance in layout and composition. Symmetrical balance, asymmetrical balance, and radial balance are the three main types of balance.

Multiple choice

Which mathematical tool is extensively used in physics to describe the motion of objects?

  1. Calculus

  2. Trigonometry

  3. Geometry

  4. Algebra
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Calculus, particularly differential and integral calculus, is a fundamental tool in physics, enabling the analysis of continuous change, rates of change, and the behavior of physical systems over time.

Multiple choice

Which of the following is not a fundamental force in physics?

  1. Gravitational force

  2. Electromagnetic force

  3. Strong nuclear force

  4. Weak nuclear force

  5. Centrifugal force
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Centrifugal force is not a fundamental force in physics. It is an inertial force that arises due to the rotation of a reference frame.

Multiple choice

What is the term for the quality of movement that is characterized by smoothness and grace?

  1. Flow

  2. Energy

  3. Power

  4. Precision
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Flow refers to the quality of movement that is characterized by smoothness and grace.

Multiple choice

According to Newton's First Law of Motion, an object at rest will remain at rest, and an object in motion will continue moving with the same velocity, unless acted upon by an external force.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This law is also known as the law of inertia.

Multiple choice

The measure of an object's resistance to changes in its motion is called:

  1. Mass

  2. Weight

  3. Momentum

  4. Force
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mass is an intrinsic property of an object that determines its resistance to acceleration.

Multiple choice

Newton's Second Law of Motion states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This law is expressed mathematically as F = ma, where F is the net force, m is the mass, and a is the acceleration.

Multiple choice

The weight of an object is the force exerted on the object due to:

  1. Gravity

  2. Inertia

  3. Momentum

  4. Friction
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Weight is a measure of the gravitational force acting on an object.

Multiple choice

The law of conservation of momentum states that the total momentum of a closed system remains constant.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This law is a fundamental principle of physics.

Multiple choice

In the absence of external forces, the center of mass of a system remains:

  1. At rest

  2. In motion

  3. Accelerating

  4. Changing direction
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is a consequence of the law of conservation of momentum.

Multiple choice

The force that opposes the relative motion of two surfaces in contact is called:

  1. Friction

  2. Gravity

  3. Inertia

  4. Momentum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Friction is a force that arises from the interaction of two surfaces in contact.

Multiple choice

The force of gravity is:

  1. A contact force

  2. A non-contact force

  3. A fundamental force

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The force of gravity is a fundamental force that acts between all objects with mass.