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.
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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.
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. How far from the pivot must the parent sit?
You 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.
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