Select all the correct answers.!

a seismograph has a heavy
weight that is hung from a spring. what would happen if the weight were attached to a rod instead of a spring?

the weight would not oscillate.

the weight would oscillate.

the pen would not make contact with the paper,

the seismogram would not be accurate,

the seismograph would not function.

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

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.

Decreased sensitivity to an unchanging stimulus is known as