In a post office, a 3-m long ramp is used to move carts onto a dock that is higher than 1 m. which describes how the ima of this ramp compares with the ima of the ramp that has a height of 1 m?

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.