Question

A black suitcase and red suitcase were tied to the car roof. It takes 5 ropes to keep a black suitcase from falling down the car while turning and only two ropes to keep the red suitcase from falling down. What do you conclude about the relative weight of the two suitcases?

Answer 1

It is given that the black suitcase requires five ropes while the red suitcase requires only two to prevent it from falling down. This means more force is required to prevent the black suitcase from falling down. This indicates that inertia of black suitcase is more than the inertia red suitcase. We know that heavier objects have more inertia. Hence, the weight of black suitcase is more than the red one.