The same three girls were pushing the same car with a net force of 450 N [N48°E]. Two of the girls were
pushing with forces of 310 N [N25°W] and 250 N [S15°E]. With what force did the third girl push the car?
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In a game of tug of war, three girls of team A pull the rope with forces of 100N, 120N and 170N. In team B, the three members pull the rope with forces of 130N, 150N and 155N. Who will win the tug of war? What is the resultant force?
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Correct option is D)
Resultant force is nothing but the total force acting on a body including their directions. If the object is at rest or it moves with a same velocity, the resultant force should be zero. All forces are acting on same direction, resultant force should be the sum of all the forces.
In this case, the forces applied by team A are 100 N, 120 N and 170 N. The total force is 100 N+120 N+170 N = 390 N. The forces applied by tema B are 130 N, 150 N and 155 N. The total force is 130 N+150 N+155 N=435 N.
Now, both the total forces are in the opposite direction as the team are in the opposite direction. So, the resultant force is 435 - 390 = 45 N.
Therefore, Team B will win in the game as they apply more force of 45 N.