Physics ยท Science General

Newtonian Mechanics and Forces

1,559 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 name of the law that states that the acceleration of an object is directly proportional to the net force acting on the object, and inversely proportional to the mass of the object?

  1. The law of inertia

  2. The law of acceleration

  3. The law of action and reaction

  4. The law of universal gravitation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The law of acceleration is the second law of motion and it states that the acceleration of an object is directly proportional to the net force acting on the object, and inversely proportional to the mass of the object.

Multiple choice

What is the name of the law that states that for every action, there is an equal and opposite reaction?

  1. The law of inertia

  2. The law of acceleration

  3. The law of action and reaction

  4. The law of universal gravitation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The law of action and reaction is the third law of motion and it states that for every action, there is an equal and opposite reaction.

Multiple choice

What is the name of the law that states that the force of attraction between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them?

  1. The law of inertia

  2. The law of acceleration

  3. The law of action and reaction

  4. The law of universal gravitation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The law of universal gravitation is the law that states that the force of attraction between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

Multiple choice

Which of the following is not a type of force?

  1. Gravitational force

  2. Magnetic force

  3. Electrostatic force

  4. Nuclear force
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Nuclear force is a type of interaction between subatomic particles, not a type of force.

Multiple choice

Which mathematical concept is used to describe the rate of change of a function?

  1. Derivative

  2. Integral

  3. Limit

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

The derivative of a function represents the instantaneous rate of change of the function at a given point.

Multiple choice

Which type of balance involves placing elements of equal visual weight on opposite sides of the frame?

  1. Radial balance

  2. Asymmetrical balance

  3. Symmetrical balance

  4. Reflective balance
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Symmetrical balance involves placing elements of equal visual weight on opposite sides of the frame, creating a mirror-like effect. This type of balance is often used to create a sense of order and harmony within the image.

Multiple choice

What is the principle of least action in the calculus of variations?

  1. The principle that states that the action of a physical system is always a minimum.

  2. The principle that states that the action of a physical system is always a maximum.

  3. The principle that states that the action of a physical system is always constant.

  4. The principle that states that the action of a physical system is always zero.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The principle of least action states that the action of a physical system is always a minimum, and this principle is used to derive the equations of motion for the system.

Multiple choice

What is the Hamiltonian formulation of classical mechanics?

  1. A formulation of classical mechanics that uses a Hamiltonian function.

  2. A formulation of classical mechanics that uses a Lagrangian function.

  3. A formulation of classical mechanics that uses a symplectic form.

  4. A formulation of classical mechanics that uses a Poisson bracket.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Hamiltonian formulation of classical mechanics is a formulation that uses a Hamiltonian function to describe the state of a system, and it is equivalent to the Lagrangian formulation.

Multiple choice

What are the fundamental dimensions in mechanics?

  1. Mass, length, and time

  2. Mass, force, and acceleration

  3. Mass, velocity, and displacement

  4. Mass, energy, and momentum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The fundamental dimensions in mechanics are mass, length, and time.

Multiple choice

What is the Coriolis effect?

  1. The deflection of moving objects due to the Earth's rotation

  2. The force that causes objects to fall towards the Earth

  3. The force that causes objects to move in a circular path

  4. The force that causes objects to accelerate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Coriolis effect is the deflection of moving objects due to the Earth's rotation. It is responsible for the formation of cyclones and anticyclones.

Multiple choice

What is the name of the mathematical model that describes the motion of celestial bodies under the influence of gravity?

  1. Newtonian Mechanics

  2. Relativistic Mechanics

  3. Quantum Mechanics

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

Newtonian Mechanics is the mathematical model that describes the motion of celestial bodies under the influence of gravity. It is based on the laws of motion and gravitation formulated by Isaac Newton.

Multiple choice

What is the factor of safety of a slope?

  1. The ratio of the resisting forces to the driving forces.

  2. The ratio of the driving forces to the resisting forces.

  3. The difference between the resisting forces and the driving forces.

  4. The sum of the resisting forces and the driving forces.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The factor of safety of a slope is the ratio of the resisting forces to the driving forces. It is a measure of the stability of a slope.

Multiple choice

Which of the following is a type of energy that is associated with the motion of objects?

  1. Kinetic Energy

  2. Potential Energy

  3. Thermal Energy

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

Kinetic energy is the energy of motion. It is associated with the motion of objects and depends on the mass and velocity of the object.

Multiple choice

What is the name of the force that attracts objects towards each other?

  1. Gravitational Force

  2. Magnetic Force

  3. Electrostatic Force

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

Gravitational force is the force that attracts objects towards each other and is responsible for keeping planets in orbit around the Sun.

Multiple choice

What is the fundamental principle behind rocket propulsion?

  1. Newton's Third Law of Motion

  2. Bernoulli's Principle

  3. The Magnus Effect

  4. The Venturi Effect
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Rocket propulsion is based on Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction. When a rocket engine expels propellant, the reaction force propels the rocket forward.