What is the acceleration of a ball that starts from rest and rolls down a ramp, gaining speed of 25 m/s in 5s

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

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.