The uniform rectangular solid block has a mass of 0.25kg and an edge length of a = 3.5 cm, b= 8.4 cm and c= 1.4 cm. calculate the rotational inertia about the axis through one corner parallel c and perpendicular to e face (a x b). what is the inerta if the rotational axis is parallel b and perpendicular to the face c x a?

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?