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 effect of increasing the rudder angle?

  1. The ship will turn more quickly.

  2. The ship will turn less quickly.

  3. The ship will stop turning.

  4. The ship will move in a straight line.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Increasing the rudder angle increases the amount of force that is applied to the water, which causes the ship to turn more quickly.

Multiple choice

What is the effect of decreasing the rudder angle?

  1. The ship will turn more quickly.

  2. The ship will turn less quickly.

  3. The ship will stop turning.

  4. The ship will move in a straight line.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Decreasing the rudder angle decreases the amount of force that is applied to the water, which causes the ship to turn less quickly.

Multiple choice

What is the effect of increasing the ship's speed?

  1. The ship will turn more quickly.

  2. The ship will turn less quickly.

  3. The ship will stop turning.

  4. The ship will move in a straight line.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Increasing the ship's speed increases the amount of water that is flowing past the rudder, which reduces the amount of force that is applied to the water. This causes the ship to turn less quickly.

Multiple choice

What is the effect of decreasing the ship's speed?

  1. The ship will turn more quickly.

  2. The ship will turn less quickly.

  3. The ship will stop turning.

  4. The ship will move in a straight line.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Decreasing the ship's speed decreases the amount of water that is flowing past the rudder, which increases the amount of force that is applied to the water. This causes the ship to turn more quickly.

Multiple choice

What is the effect of increasing the ship's draft?

  1. The ship will turn more quickly.

  2. The ship will turn less quickly.

  3. The ship will stop turning.

  4. The ship will move in a straight line.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Increasing the ship's draft increases the amount of water that is displaced by the ship, which reduces the amount of force that is applied to the water. This causes the ship to turn less quickly.

Multiple choice

What is the effect of decreasing the ship's draft?

  1. The ship will turn more quickly.

  2. The ship will turn less quickly.

  3. The ship will stop turning.

  4. The ship will move in a straight line.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Decreasing the ship's draft decreases the amount of water that is displaced by the ship, which increases the amount of force that is applied to the water. This causes the ship to turn more quickly.

Multiple choice

What is the effect of decreasing the ship's trim?

  1. The ship will turn more quickly.

  2. The ship will turn less quickly.

  3. The ship will stop turning.

  4. The ship will move in a straight line.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Decreasing the ship's trim decreases the amount of water that is flowing past the rudder, which reduces the amount of force that is applied to the water. This causes the ship to turn less quickly.

Multiple choice

What is the effect of increasing the ship's heel?

  1. The ship will turn more quickly.

  2. The ship will turn less quickly.

  3. The ship will stop turning.

  4. The ship will move in a straight line.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Increasing the ship's heel increases the amount of water that is flowing past the rudder, which increases the amount of force that is applied to the water. This causes the ship to turn more quickly.

Multiple choice

What is the effect of decreasing the ship's heel?

  1. The ship will turn more quickly.

  2. The ship will turn less quickly.

  3. The ship will stop turning.

  4. The ship will move in a straight line.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Decreasing the ship's heel decreases the amount of water that is flowing past the rudder, which reduces the amount of force that is applied to the water. This causes the ship to turn less quickly.

Multiple choice

What is a sticking point?

  1. The point in a lift where the lifter is unable to move the weight any further

  2. The point in a lift where the lifter is at their strongest

  3. The point in a lift where the lifter is most likely to injure themselves

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A sticking point is the point in a lift where the lifter is unable to move the weight any further. This can be caused by a number of factors, such as fatigue, technique issues, or a lack of strength.

Multiple choice

In a static equilibrium, the net force acting on an object is:

  1. Zero

  2. Non-zero

  3. Cannot be determined without more information
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

According to Newton's first law of motion, an object at rest will remain at rest, and an object in motion will continue moving at a constant velocity, unless acted upon by an unbalanced force. In static equilibrium, there are no unbalanced forces acting on the object, resulting in a net force of zero.

Multiple choice

What happens at a convergent boundary?

  1. Two plates collide

  2. Two plates move away from each other

  3. Two plates slide past each other

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

At a convergent boundary, two plates collide, causing one plate to be subducted beneath the other.

Multiple choice

Which of the following is a vector quantity?

  1. Mass

  2. Temperature

  3. Velocity

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

Velocity is a vector quantity because it has both magnitude and direction.

Multiple choice

Which of the following is a scalar quantity?

  1. Force

  2. Energy

  3. Momentum

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

Temperature is a scalar quantity because it has only magnitude and no direction.

Multiple choice

Which of the following is NOT a common disturbance that can affect spacecraft attitude control?

  1. Gravity gradient torques

  2. Aerodynamic torques

  3. Solar radiation pressure

  4. Magnetic field disturbances
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gravity gradient torques, aerodynamic torques, and solar radiation pressure are common disturbances that can affect spacecraft attitude control. Magnetic field disturbances are not typically a significant concern.