The question is How does an inclined plane affect the work that is done on an object ? A . It decreases the input distance
B. It increases the input distance
C. It decreases the amount of input forces needed
D. It decreases the amount of output forces needed
:D Giving 25 point !!!

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.