Answer pastpaper

Answer all the inquiries. Offer non-precise numerical responses right to 3 huge figures, or 1 decimal spot on account of edges in degrees, except if an alternate degree of exactness is indicated in the inquiry. Where a numerical incentive for the speeding up because of gravity is required, utilize 10 m s-2. The utilization of an electronic adding machine is normal, where suitable. You are helped to remember the requirement for clear introduction in your answers. Toward the finish of the assessment, attach all your work safely together. The quantity of imprints is given in sections [ ] toward the finish of each question or part question.The complete number of imprints for this paper is 50. Questions conveying littler quantities of imprints are printed before in the paper, and questions conveying bigger quantities of imprints later in the paper. This record comprises of 3 printed pages and 1 clear page. UCLES 2011 [Turn more than 2 A vehicle of mass 700 kg is going along a straight fla t street. The protection from movement is steady and equivalent to 600 N. (I) Find the main impetus of the's motor at a moment when the increasing speed is 2 m s-2. Given that the vehicle's speed at right now is 15 m s-l ,'s motor is working. discover the rate at which theA heap of mass 1250 kg is raised by a crane from lay on flat ground, to rest at a stature of 1. 54 m over the ground. The work done against the protection from movement is 5750 J. (I) Find the work done by the crane. (it) Assuming the force yield of the crane is steady and equivalent to 1. 25 kW, discover the time taken to raise the heap. 3 q 15. 5 N A little smooth ring R of weight 8. 5 N is strung on a light inextensible string. The parts of the bargains are connected to fixed focuses An and B, with A vertically above B. An even power of extent 15. 5 N follows up on R so the ring is in harmony with ngle ARB = 900 .The part AR of the string makes a point B with the level and the part BR makes an edge B with the ve rtical (see graph). The pressure in the string is T N. Show that T sin 12 and T cos B = 3. 5 and henceforth discover B . [6] 4 A square of mass 11 kg is very still on a harsh plane slanted at 300 to the even. A power follows up on the square toward a path up the plane corresponding to a line of most prominent slant. At the point when the greatness of the power is 2X N the square is about to start sliding down the plane, and when the size of the power is 9X N the square is about to start liding up the plane.