Vector Diagrams

• What is the purpose of using vector diagrams in physics?

  To calculate the resultant of two forces acting at an angle.
• What is a resultant force?

  • A single force that has the same effect as multiple forces acting on an object.
• What do scientists call the single force that replaces multiple forces?

  Resultant force.
• What is the significance of the angle between two forces in vector diagrams?

  The angle affects the calculation of the resultant force.
• How do you represent forces in a vector diagram?

  By drawing arrows proportional to their magnitudes and at the correct angles.
• How do you create a parallelogram in a vector diagram?

  By positioning the second vector at the head of the first vector and drawing lines to complete the shape.
• What does a length of 17.5 cm represent in terms of force?

  It represents a resultant force of 17.5 Newtons.
• What is the process to calculate the resultant force when given two forces and an angle?

  1. Decide on a scale for the diagram.
  2. Draw the first vector to scale.
  3. Measure and draw the second vector at the specified angle.
  4. Complete the parallelogram.
  5. Measure the resultant vector and convert it back to force using the scale.
• What should you ensure when drawing a vector diagram in an exam?

  • Draw the diagram as accurately as possible.
  • Be aware that a small range of possible answers for the resultant force will be accepted.