Resultant force and work done

Question 1

What is work done?

Answer 1

When a force moves an object through a distance energy is transferred and work is done on the object.

Question 2

Formula for work done?

Answer 2

W=Fs
Work done (J) = Force (N) x Distance (M)

Question 3

Unit of work done?

Answer 3

Newton-meters

Question 4

How many joules equal to one newton meters?

Answer 4

1

1J=1Nm

Question 5

How many newton meters are in 5 joules?

Answer 5

5

1J=1Nm

Question 6

What are forces?

Answer 6

A vector

Question 7

What does a vector represent?

Answer 7

Magnitude and Direction

Question 8

Forces act from where?

Answer 8

Centre of mass

Question 9

What is TTT stand for?

Answer 9

Tip to Tail

Question 10

What does SD stand for?

Answer 10

Scale diagrams

Question 11

What should you always use as a scale for scale diagrams?

Answer 11

1N=1cm

Question 12

How do you find the resultant vector?

Answer 12

Draw a line form a tip of the first force and the tail of the other force.

Question 13

What happens when a resultant force moves an object?

Answer 13

Work is done.

Question 14

What does the term equilibrium mean?

Answer 14

Resultant force equals zero.

Question 15

What is a Free Body Diagram?

Answer 15

A diagram that shows all the forces acting on an object. All of the forces are represented with arrows (vector lines)

Question 16

What can you do if multiple forces act alone the same line (parallel)?

Answer 16

You can replace them with a single force that has the same effect.

Question 17

If the three forces tip to tail end up at the same place where it started, what does this mean?

Answer 17

The forces are at equilibrium

Question 18

If the resultant force equals O what does this mean.

Answer 18

The object is still or moving at a constant speed.

Question 19

Any force at angle can be represented as?

Answer 19

A vertical component and a horizontal component.

Acting together these components have the same effect.