24. a. Calculate the work needed to lift a 90-N
block of ice a vertical distance of 3 m. What
PE does it have?

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg

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.