Four Forces act on an object. The first force is 60 N at 90o; the second is 40 N at 0o; the third is 80 N at 270o and the fourth is 40 N at 180o. Determine the magnitude and direction of the resultant of all four forces by following the steps below. Step 1: Perform the necessary calculations (by resolving each force into the horizontal and vertical components) and determine the magnitude and direction of the resultant force. Note: Step 1 is strictly using the theoretical approach of calculations. Step 2: Using graph paper provided, a protractor and a ruler, determine the resultant force graphically. (Choose an appropriate scale to fit your graphical solution on the graph paper provided).

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!