Quiz about Statics

Question 1

As a student runs a plastic comb through her hair, the comb acquires a negative electric charge. This charge results from the transfer of

Accepted Answer

electrons from her hair to the comb

Answer

protons from the comb to her hair

Answer

protons from her hair to the comb

Answer

electrons from the comb to her hair

Question 2

The diagram below shows the electric field in the vicinity of two charged conducting spheres, A and B. What is the static electric charge on each of the conducting spheres?

Accepted Answer

A is positive and B is negative.

Answer

Both A and B are positive.

Answer

Both A and B are negative.

Answer

A is negative and B is positive

Question 3

When a particle is in equilibrium, the sum of forces acting is equal to

Accepted Answer

zero

Answer

external forces

Answer

internal forces

Answer

moment

Question 4

Balanced or unbalanced?

Accepted Answer

unbalanced

Answer

balanced

Question 5

Name the missing force...

Accepted Answer

normal force

Answer

weight force

Answer

applied force

Answer

frictional force

Question 6

Name the missing force...

Accepted Answer

frictional force

Answer

weight force

Answer

thrust

Answer

buoyant force

Question 7

Name the missing force...

Accepted Answer

push

Answer

weight force

Answer

tension force

Answer

drag

Question 8

Name the missing force...

Accepted Answer

tension force

Answer

gravitational force

Answer

normal force

Answer

applied force

Question 9

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

Accepted Answer

normal

Answer

abnormal

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static

Answer

inertia

Question 10

In a force diagram the size/length of the arrow tells you this about the force:

Accepted Answer

the strength of the force

Answer

the distance of the force

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the direction of the force

Question 11

This diagram can be used to indicate which of the following? (TWO correct answers)

Accepted Answer

a object at rest

Accepted Answer

an object moving at a constant velocity (speed)

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an object accelerating

Answer

(Trick question -- there is only one correct answer)

Answer

an object decelerating

Question 12

What is the condition for a body to be in static equilibrium?

Accepted Answer

Both net force and net torque acting on the body are zero

Answer

The net force acting on the body is zero

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The net torque acting on the body is zero

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The body is at rest

Question 13

Which of the following is an example of a static force?

Accepted Answer

Tension in a stationary rope

Answer

Gravitational force

Answer

Frictional force

Answer

Magnetic force

Question 14

In statics, what does the term 'moment' refer to?

Accepted Answer

The tendency of a force to rotate an object about an axis

Answer

The speed of an object in motion

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The mass of an object

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The energy stored in an object

Question 15

What is the principle of transmissibility in statics?

Accepted Answer

Forces can be moved along their line of action without changing the external effect on a rigid body

Answer

Forces can be added together to form a resultant force

Answer

Forces can be transmitted through a medium without loss

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Forces can be converted into energy

Question 16

Which of the following is a scalar quantity in statics?

Accepted Answer

Mass

Answer

Force

Answer

Torque

Answer

Displacement

Question 17

What is the role of a free-body diagram in statics?

Accepted Answer

To represent all the forces acting on a body

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To calculate the velocity of an object

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To measure the temperature of a body

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To determine the color of a body

Question 18

In a beam supported at both ends, where is the maximum bending moment likely to occur?

Accepted Answer

At the midpoint

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At the supports

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At one quarter of the length

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At three quarters of the length

Question 19

What is the unit of force in the International System of Units (SI)?

Accepted Answer

Newton

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Joule

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Watt

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Pascal

Question 20

Which of the following conditions must be satisfied for a structure to be statically determinate?

Accepted Answer

The number of unknown forces equals the number of equilibrium equations

Answer

The structure is symmetrical

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The structure is made of steel

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The structure is in motion

Question 21

What is the effect of a couple on a rigid body in statics?

Accepted Answer

It produces rotational motion

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It produces translational motion

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It has no effect

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It changes the mass of the body

Question 22

In statics, what is the significance of the centroid of a body?

Accepted Answer

It is the point where the entire weight of the body acts

Answer

It is the point where the body is in motion

Answer

It is the point where the body has maximum velocity

Answer

It is the point where the body has maximum temperature

Statics

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