A 3.0 cm sphere 4.0 cm3 cone.6.0emd cube and a 5.0 cm pyramid are used in a dynamics lab activity The specific gravity for each of these objects is as follows: sphere (0.90) cone (0.70), cube (0.40) and pyramid (0.60) Rank these objects in order of their resistance to change in motion (from greatest to least).A. pyramid, cone, sphere, cube B. cube, pyramid, cone, sphere C. sphere, cone, pyramid, cube D. None of the above.

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers

Apotter's wheel moves uniformly from rest to an angular speed of 0.20 rev/s in 32.0 s. (a) find its angular acceleration in radians per second per second. rad/s2 (b) would doubling the angular acceleration during the given period have doubled final angular speed?