Work and energy

Question 1

Recall that to ‘do work’ is:

Answer 1

• To transfer energy

Question 2

Recall and use the definition of work done as:

Answer 2

• The scalar product of (constant) force applied and distance moved
• 𝑊 = 𝐅 ∙ 𝐱 = 𝐹𝑥 cos 𝜃

Question 3

Appreciate that no work is done if: (+example)

Answer 3

• F (force) and x (distance) are perpendicular
• For example circular motion

Question 4

Recall and apply the principle of conservation of energy both qualitatively and quantitatively

Answer 4

See notes page