Revision: Dynamics Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 06 Dynamics - Revision Quiz Test your understanding of Dynamics here: 1 / 5 1) The diagram below shows a set of traffic lights suspended over a road junction using cables tied to two poles. Which of the following statements is not true? The sum of the vertical components of the cable tensions is equal to the weight of the traffic lights. The tension in cable Y is higher than that in cable X. The horizontal components of the tensions in the cables are equal and opposite. The resultant force acting on the traffic lights is zero. 2 / 5 2) The diagram below shows a block accelerating down a smooth slope. It is known that there are two forces acting on the block, namely the weight of the block, W, and the normal contact force, N. Which vector diagram correctly represents the forces acting on the block, where R is the resultant force? D C A B 3 / 5 3) Three forces P, Q and R act on an object. Which of the following diagrams correctly show the forces to be at equilibrium? B C D A 4 / 5 4) A plane of mass 4000 kg has a forward thrust of 6000 N and experiences a drag force of 4000 N. What is the acceleration of the plane? 0.050 m/s–2 2.0 m/s–2 0.50 m/s–2 4.0 m/s–2 5 / 5 5) The diagram below shows the forces acting on an aeroplane. Which of the following is correct when the aeroplane is descending with a constant horizontal speed and an increasing vertical speed? Drag = Thrust and Lift > Weight Drag > Thrust and Lift < Weight Drag = Thrust and Lift < Weight Drag < Thrust and Lift = Weight Your score is Restart quiz
