The diagram above shows a load that will be lifted using a lever. The distance from the tip of the fulcrum to the end of the board carrying the load is 5 m. The entire length of the board is 15 m. The end of the board where force will be applied is 3 m off the ground. How much work will be done if the load is raised as high as the lever can raise it, and the force used is 400 N?

step-by-step explanation:

the height of the surface increases from the center out to the sides of the road

it is c!

• before the lesson, students attempt the assessment task individually. you then review students’

solutions and formulate questions that will them improve their work.

• during the lesson, students work collaboratively in pairs or threes, plotting graphs, completing

tables of values and deducing equations. then, based on the number of common solutions,

students link these representations.

• in a follow-up lesson, students receive your comments on the assessment task and use these to

attempt the similar task, approaching it with insights gained from the lesson.