[Custom] Forces Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Define 1 Newton

State the equation

A

The force that will give a mass of 1kg an acceleration of 1ms^” in the direction of the force.

F = ma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Define weight

State the equation

A

The gravitational force acting upon an object, through its centre of mass

W=mg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Define friction

A

The force that arises when two surfaces rub against eachother

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Define drag

A

The resistive force on an object travelling through a fluid (water or air)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Tension

A

The force within a stretched cable or rope

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Upthrust

A

The upward buoyancy force acting on an object when it is in a fluid.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Normal contact force

A

The force arising when an object rests against another object acting at a 90 degree angle to the plane of contact.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Define moment

A

Force x Perp Distance from the line of action of the force to the axis or the point of rotation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

State the principal of moments

A

For a body in rotational equilibrium, the sum of the anticlockwise moments is equal to the sum of the anticlockwise moments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the torque of a couple defined as?

A

The magnitude of one of the forces multiplied by the perpendicular separation between the forces.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

At any depth, the pressure in a fluid will be exactly the same in every _____

A

direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Define power

A

The rate of doing work

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is centre of mass?

A

The point where the entire weight of the object appears to act.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly