5.09 Forces and Calculations

By the end of the session, learners should be able to carry out calculations using what type of forces?

• Forces represented by scalars

• Forces represented by vectors

• Forces represented by matrices

• Forces represented by algebraic expressions

What should learners be able to state regarding forces by the end of the session?

• The conditions for acceleration

• The conditions for velocity

• The conditions for equilibrium

• The conditions for motion

What type of forces should learners be able to carry out calculations with, besides forces represented by vectors?

• Uniplanar forces

• Coplanar forces

• Non-coplanar forces

• Interplanar forces

What does the length of the line in a vector represent?

• The direction of the force

• The magnitude of the force

• The angle of the force

• The resultant magnitude

What does the angle in a vector indicate?

• The magnitude of the force

• The direction of the force

• The horizontal component

• The vertical component

How can a force vector be split in terms of its components?

• Diagonally and laterally

• Vertically and horizontally

• Perpendicularly and parallelly

• Clockwise and counterclockwise

What is the vertical component of the force vector equal to?

• cos θ

• tan θ

• sin θ

• θ

What is the horizontal component of the force vector equal to?

• sin θ

• tan θ

• cos θ

• θ

What is the formula for the resultant magnitude of the force vector?

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How can the angle θ of the resultant force be determined according to the learning material?

• Using a ruler

• Measuring with a protractor on the force diagram

• Calculating from a given formula

• Estimating by eye