An electric aircraft is towing a glider along a straight horizontal flight path at a constant speed.
A constant tension of T T\,T newtons acts in the horizontal tow-line connecting the aircraft to the glider. The aircraft's propulsion system provides a constant forward thrust of 3200 N. The constant air resistance acting on the glider is 1150 N.
Determine the value of TTT, justifying your answer from the physical state of the system.
State one assumption you have made about the tow-line.
Find the magnitude of the air resistance acting on the aircraft.
87 exam-style questions on OCR (MEI) A Level Maths 3.4 Forces, covering 3.4.1 Language relating to forces, 3.4.2 Acceleration due to gravity, 3.4.3 Identify forces and draw force diagrams, 3.4.4 Resultant of concurrent forces, 3.4.5 Equilibrium of a particle, 3.4.6 Resolve a force into components (A-level only), 3.4.7 Equilibrium condition for resultant zero (A-level only), 3.4.8 Forces in equilibrium sum to zero (A-level only), 3.4.9 Equations for a particle in equilibrium (A-level only), 3.4.10 Frictional force and normal contact force (A-level only), 3.4.11 Model friction with F ≤ μR (A-level only), and 3.4.12 Apply Newton's Laws to friction problems (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.