* A 1000 kg elevator has a downward acceleration of 1.0 m/s². The tension in its

Question

* A 1000 kg elevator has a downward acceleration of 1.0 m/s². The tension in its supporting cable is :
1) 1100 N 2 ) 9800 N 3) 10800 N 4 ) 1000 N 5) 8800 N
-------------------------------------------------------
* A sphere moving with velocity v collides head-on with an identical initially at rest if the collision is perfectly elastic, then which statement correctly describes the subsequent motion of the spheres?
1) The first sphere comes to rest, while the second sphere moves with velocity v.
2) The first sphere rebounds with velocity –v while the second sphere remains at rest
3) Both spheres move together with a common velocity v/2.
4) The first sphere rebounds with velocity –v while the second sphere moves with a velocity +v .

Explanation / Answer

F-mg = -ma tension F = m(g-a) = 1000(9.8-1) = 8800 N 5) 8800 N 1) The first sphere comes to rest, while the second sphere moves with velocity v.

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.