Hello, I need some help with physics. Topic: torque and rotational inertia. Thank you!

Question1 l 1 Point l Calculate the rotational inertia of a solid. uniform sphere with a mass of 12.2 kg and a radius of 0.63 m. Round your answer to one decimal place. Add your answer Question 2 Consider a see-saw with a total length of 11 m. A child with a mass of 31 kg sits on the very end of the see-saw. The child's parent. who has a mass of 89 kg. sits on the other side of the see-saw such that she balances the see-saw. HowI far from the pivot must the parent sit? Add your answer Question 3 Vou are looking for your iPhone and have decided to look under your couch. The couch is 2.6 m long and the centre of mass of the couch is 10.4 cm from the middle [towards one end}. The couch has a mass of 92.4 kg. What is the minimum force required to lift one end of the couch in Newtons? Leave your answer to the nearest whole number. Add your