Consider a uniform sphere (I=2/5mR 2 ), which has a mass of 4.80 kg and a radius of 0.22 m. A tangential force of 11.2 N is applied to the outer edge of this sphere. Calculate the resulting angular acceleration.

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?