WJEC Physics for AS Level: Revision Workbook

Q9 Two tugs, T 1 and T 2 , are towing a large ship out of port. T 1 exerts a force of 5.0 kN at 15° to the forward direction. T 2 is a more powerful tug and exerts a larger force F at 10° to the forward direction. The resultant force of these is exactly in the forward direction. Resultant force F 10° 15° 5.0 kN T 1 T 2 (a) Show that the magnitude of the component of the 5.0 kN force at 90° to the forward direction is approximately 1.3 kN. 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(b) State the magnitude of the component of force F at 90° to the forward direction. [1] ......................................................................................................................................................................................................................................................................................................................................... (c) Calculate the magnitude of force F . 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(d) Calculate the resultant of the two forces on the ship. 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Q10 An object has several forces acting on it. State the two conditions which must be satisfied for the object to be in equilibrium. 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