Question

To prevent damage to her shoulders, your grandmother wants to purchase a rug beater with the lowest moment of inertia about its grip end. Knowing you are taking physics, she asks your advice. There are two models to choose from. Model A has a 1 m long handle on a 40 cm edge length square, where masses of the handle and square are 1 kg and 0.5 kg, respectively. Model B has a 0.75 m long handle and a 30 cm edge length square, where the masses of the handle and square are 1.5 kg and 0.6 kg, respectively. Which model should you recommend?

Answer 1