Fig. 4.1 shows a heavy ball B of weight W suspended from a fixed beam by two ropes P and Q. 30 N 45° W 30 N 45 beam. Fig. 4.1 P and Q are both at an angle of 45° to the horizontal. The tensions in P and Q are each 30N. (a) In the space below, draw a scale diagram to find the resultant of the tensions in P and Q. Use a scale of 1.0cm to represent 5.0 N. Label the forces and show their directions with arrows.

Q: C1 A,

A: Given, P = 334 NQ = 405 N∠A = 30°∠B = 18°∠C = 51°∠D = 20°

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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!