In outer space, a rod is pushed to the right by a constant force F (Figure 4.54). Describe the pattern of interatomic distances along the rod. Include a specific comparison of the situation at locations A, B, and C. Explain briefly in terms of fundamental principles.
Hint: Consider the motion of an individual atom inside the rod, and various locations along the rod.
(b) After the rod in part (a) reaches a speed v, the object that had been exerting the force on the rod is removed. Describe the subsequent motion of the rod and the pattern of interatomic distances inside the rod. Include a specific comparison of the situation at locations A, B, and C. Explain briefly.
a) The interatomic bonds are more compressive at point A than they are at B and C.
b) Point A particles will vibrate more because have more displacement than other particles. Point C particle will have an amplitude smaller than point A and B particle.
When the force applying (pushing) on the left end of the rod, It somewhat compresses the interatomic bond between adjacent atoms in the rod's adjoining region. The compress atoms of the bonds of their adjoining, the new interatomic bond compression spreads fast to the right, from the left end of the rod to right, and the rod goes into tension. The figure showing pattern of interatomic distance as force is applied on the left face so the interatomic distance is small as we going to along the right face the interatomic distance is large.
When force F is removed the particles start to go to the old or initial position and start vibrating. Vibrating only those atoms or particles who’s in atomic interactions. Point A particles will vibrate more because have more displacement than other particles. Point C particle will have an amplitude smaller than point A and B particle.
Two wires are made of the same kind of metal. Wire A has a diameter of 2.4 mm and is initially 2.8m long. You have a 8kg mass from wire A, measure the amount of stretch, and determine Young’s modulus to be Wire B, which is made of the same kind of metal as wire A, has the same length as wire A but twice the diameter. You hang the same 8kg mass from wire B, measure the amount of stretch, and determine Young’s modulus ,
Which one of the following is true?
It is sometimes claimed that friction forces always slow an object down, but this is not true. If you place a box of mass on a moving horizontal conveyor belt, the friction force of the belt acting on the bottom of the box speeds up the box. At first there is some slipping, until the speed of the belt, which is . The coefficient of kinetic friction between box and belt is . (a) How much time does it take for the box to reach this final speed? (b) What is the distance (relative to the floor) that the box moves before reaching the final speed of ?
94% of StudySmarter users get better grades.Sign up for free