A uniform hollow disk with inner radius 30cm and outer radius 60cm has two pieces of thin wire wrapped around its outer rim and is supported from the ceiling. Suddenly one of the wires breaks and the remaining wire does not slip as the disk rolls down. Use conservation of energy to find the speed of the center of this disk after it has fallen a distance of 2m.

Speed of the center of the disc is 4.96 m/s

Explanation:

As we know that moment of inertia of the hollow disc is given as

now we know when one wire is break then disc will roll down so here loss in gravitational potential energy will convert into kinetic energy of the system

So we will have

so we will have

so we have

(A) People accomplish more in their work and personal lives when practicing good human relations.

True, because if you feel positive you have more motivation to do more and better things

(B) In general, people accomplish less when practicing good human relations.

False, because stated above you want to accomplish more in a good mood compared to wanting to do nothing in a bad mood

(C) People feel better about themselves when practicing good human relations.

True, because people feel more welcomed and that they fit into their community

(D) People work better together when practicing good human relations.

True, because you will work better if you feel like you are being respected and treated kindly to

(B) In general, people accomplish less when practicing good human relations.

Reason: All other options are positive remarks and (B) is the only negative / false answer