 # Resultant forces and Vector Diagrams

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IGCSE Physics Lessons
Math Worksheets

A series of free GCSE/IGCSE Physics Notes and Lessons.

Resultant Forces
Describe what is meant by a resultant force.
How to calculate resultant forces acting parallel to each other or in a straight line.
Draw a free-body diagram to show the forces acting on an object.

Vector Diagrams
How to work out the resultant of two forces at an angle by using a vector diagram?
Examples:
1. Two forces are acting on an object. One force has a magnitude of 10N and the other force has a magnitude of 8N. The angle between the two forces is 30°. Draw a vector diagram to find the resultant force.
2. A force of 280N and a force of 320N are acting on an object. There is an angle of 20° between the forces. Calculate the resultant force.
Resolving Forces
How to take a single force and resolve it into two components, one in the x direction and the other in the y direction?
How to use a vector diagram to resolve a single force into two forces?
Examples:
1. A 100N force is acting at an angle of 35° with the horizontal. Determine the horizontal and vertical components of this force.
2. A 75N force is acting at an angle of 20° with the horizontal. Determine the horizontal and vertical components of this force.

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