What force is required to throw a 0.5 kg ball at an acceleration of 3 m/s / s ? a. 3.5 N
b. 6 N
c. 1.5 N
d. 15 N

The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.