A motorised trolley of mass 120 kg is linked by a light horizontal cord to an unpowered trolley of mass 30 kg. They move on a level track. The motor provides a forward force of 450 N. Resistive forces of 60 N and 30 N act on the motorised and unpowered trolleys respectively.
Find the common acceleration of the two trolleys.
Find the tension in the cord.
49 exam-style questions on OCR (MEI) A Level Maths 3.5 Newton's Laws of Motion, covering 3.5.1 Meaning of Newton's three laws, 3.5.2 Equation of motion, 3.5.3 Equation of motion for a particle in a straight line, 3.5.4 Model a system of connected particles, 3.5.5 Equations of motion for individual particles, 3.5.6 System with no relative motion as a single particle, and 3.5.7 Equation of motion in a straight line or plane (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.