Adisk of radius r is attached to a rod of length l2, and it rotates about it with angular velocity @ (as shown). the rod pivots about an arm of length l1, with angle o. this arm is attached to a vertical shaft that is rotating with the constant angular velocity of q. find (a) the angular velocity and (b) angular acceleration of the disk, and (c) the velocity and (d) acceleration of the center of the disk.

Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.

What is an electric motor? explain its operation. 2-3 sentence

Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)