Forces and Machines, Drawn

Read the forces off a diagram, and see why a ramp makes lifting easier.

8 questions, free, marked as you go with a worked explanation on every one.

What this covers

The questions

  1. Look at the block on the surface. Which pair of forces is balanced when it sits still?
  2. Using the same diagram, what happens if the applied push is bigger than the friction?
  3. The inclined plane is a simple machine. What does using the ramp shown change about lifting the load?
  4. Look at the ramp diagram. A ramp is 6 m long and lifts a load 1.5 m. What is its ideal mechanical advantage?
  5. In the lever shown, moving the fulcrum closer to the load has what effect?
  6. Using the lever diagram, which are true of this machine? Select all that apply.
  7. The block diagram shows friction opposing motion. Which change would reduce it?
  8. Using the ramp diagram, a load weighing 600 N is moved up a ramp with an ideal mechanical advantage of 4. Ignoring friction, what effort is needed, in newtons?

Answer these free