Mechanical Engineering Quiz # 27

What is the distance travelled but with a direction associated?

Direction

Displacement

Acceleration

Velocity

What does speed not have?

A destination

A direction

A purpose

What is the magnitude of velocity?

Speed

Velocity

Distance

What is the change in an object's position over time?

Velocity

Distance

Acceleration

Location

What is an example of acceleration?

Change in altitude

Change in velocity

Acceleration due to gravity

Change in direction

What is the measurement of a body's resistance to acceleration?

Inertia

Angular momentum

Mass

Inch

What is the SI unit of force?

Newton

Newtons per Square Metre

Kilogram

Pounds

What is the vector sum of all the forces acting on a body or system?

Gravitational force

Net force

Centripetal force

None

Which law states that an object continues at rest, or at constant velocity, unless an external force acts on it?

Einstein's first law

Laplace's third law

Einstein's second law

Newton's first law

What did Newton's second law say about the relationship between force and acceleration?

Proportional to

Proportional to distance

Unequal to

Inversely proportional to

What does Newton's third law describe?

For every action there is an equal and opposite reaction in a particular direction

For every action there is an equal and opposite reaction

The force of gravity accelerates objects towards the ground

The more mass an object has, the more gravitational force it exerts

What is the force that opposes the motion of two objects in contact?

Reaction force

Gravitational force

Thrust force

Friction force

What is tension force(T)?

The pressure exerted by a fluid on an object immersed in it

The weight of an object

A force that tends to stretch intermolecular bonds

A force that tends to pull objects apart

What is the resistance an object encounters moving through a fluid called?

Gravity

Drag

Surface tension

Impulse

What is the measurement of angle subtended by an object moving around the circumference of a circle?

Degree measure

Circumference

Radian measure

Angular displacement

What is the change in velocity required for an object to travel around a circle?

Radial velocity

Centripetal acceleration

Linear velocity

Angular velocity

What is the force required to produce the centripetal acceleration?

Weight

Centripetal force

Acceleration due to gravity

Strength of the object

What happens to the velocity of an object in circular motion?

It constantly changes

It decreases

It increases

It stays the same

What is a system in equilibrium?

When the system has reached its steady state

When the temperature of the system is constant

When an external force or torque is removed

When the net forces and torques on that system are zero

What does static equilibrium mean when applied to a system?

Inert

Unstable

Constant

Stationary

What is dynamic equilibrium?

A dynamic equilibrium occurs when a system is in equilibrium and also in motion

A dynamic equilibrium occurs when a system is in motion and moving toward an equilibrium position

A dynamic equilibrium occurs when a system is in motion and at rest

A dynamic equilibrium occurs when all the forces on a system are in balance

What is the product of a quantity and its perpendicular distance?

A triangle

A line segment

The hypotenuse

The moment

N terms of moments, what does the principle of moments mean?

The more moments an object has, the more stable it will be

The principle of moments states that the inner product of two vectors is equal to their combined moment vector

At equilibrium, the sum of the clockwise moments equals the sum of the counter-clockwise moments

What is the definition of work?

The transfer of energy from one system to another

The provision of goods and services to others

An occupation

The use of one's physical or mental abilities to produce goods and services

What is kinetic energy?

The energy that a system has due to its interactions with other systems

Energy that an object has by virtue of its position

The energy of an object that is in motion

What is a type of periodic motion?

Vibrating motion

Rotational motion

Impulse motion

Simple harmonic motion

What does Hooke's law state within elastic limits?

The strain always increases with stress

The strain is directly proportional to the stress

The strain is proportional to the stress

The strain is inversely proportional to the stress

A body has plane motion, if all its points move in planes which are parallel to which reference plane?

Any plane

Some reference plane

None

The x-axis

A body has translation if it moves so that all straight lines in the body move to what?

Same direction

Same direction as the first line

Parallel positions

Same distances

What are mechanisms called that have a point that moves along a straight line?

Planetary motion mechanisms

Carpeting mechanisms

Rotary motion mechanisms

Straight line motion mechanisms