[填空题]
In traveling to the Moon, astronauts aboa4h ef:scsq5.h yrkj-9rd the Apollo spacecraft put themselves5 h. qryh-j9kcses:4fvg n -+fz2 ewzdf8r:m r7zvitk*2bl8 5 into a slow rotation to distribute the Sun’s energy evenly. At the start of their trip, they accelerated from no rotation to 1.0 revolution every minute during a 12-min time interval. The spacecraft can be thought of as a cylinder with a diameter of 8.5 m. Determinel2bmv 5r7vdz:tz frw 2i*f+ke88zn- g (a) the angular acceleration, $\approx$ $rad/s^2$ (b) the radial and tangential components of the linear acceleration of a point on the skin of the ship 5.0 min after it started this acceleration. $a_{tan}$ = $ \times10^{ -4}$ $m/s^2$ $a_{rad}$ = $ \times10^{ -3}$ $m/s^2$