PHYSICS · Subjective · CBSE · Physics · Force and Laws of Motion · Force and Laws of Motion
Problem
A toy car of mass 2kg is pulled along a straight, horizontal floor.
(a) The pulling string exerts a horizontal force of 50N on the car, while friction opposes the motion with a force of 35N. Calculate the magnitude and direction of the net force acting on the car.
(b) In which direction will the car accelerate? State the reason for your answer.
(c) After travelling for some distance, dust collects on the wheels and the frictional force rises to 50N while the pull remains 50N. Describe the immediate motion of the car just after this change and explain your reasoning.