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Problem: Two forces act on a bracket: 600 N at \(45^\circ\) and 900 N at \(-30^\circ\) from \(+x\). Find the magnitude and direction of a third force for which the resultant of all three is 1.5 kN along \(+x\).
Reference materials
Engineering Mechanics: Statics
Vector Mechanics for Engineers: Statics
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Engineering Statics: Open and Interactive
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Notes, problems and apps on the same topics
Add any number of coplanar forces by summing x and y components, and find an unknown force from a known resultant.
Find the resultant of two or more forces with the parallelogram law, the triangle rule and the laws of sines and cosines.
Write a force by its x and y components, in scalar and Cartesian vector form, and get its magnitude and direction back.
Add concurrent forces in space component by component and find the magnitude and direction angles of the resultant.
Add any number of forces in a plane with a clear component table and a force polygon, or find the force that is missing, that balances the others or that turns the resultant to a wanted direction.
Drag two or more forces and watch their resultant appear by the parallelogram, triangle or polygon rule, with the magnitude and direction worked out live.
Split a force into two parts along any two directions, perpendicular or not, or into x and y parts from an angle or a slope, with every step shown on the drawing.
Build a force in space from its components, its three direction angles, two angles or two points, turn the 3D view with the mouse, and add several forces into one.
Start statics here: its basic models and principles, SI and U.S. units, and a five-step method for solving problems, with practice problems and unit converters.
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