Tin is helping his mother rearrange the bedroom furniture. He pushes on a bed with a force of 250 N directed at an angle of 20° above a horizontal line while his mother pushes with a force of 120 N directed at an angle of 30° below the same horizontal. (a) What is the vector sum of these two forces? (b) What is the direction of the resultant force?

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Q: An antelope is being pulled by two forces whose vector-component expressions are: F1 = -2.3Ni +…

A: Ans:- Image-1

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A: The angle between two vectors θ=cos-1F→1·F→2F→1F→2=cos-1-3.3 Ni^+4.5 Nj^-2.7 Nk^·-1 Ni^+0.2 Nj^+3.4…

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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!