Simple Harmonic Motion 5 Question 14
19. Column I describes some situations in which a small object moves. Column II describes some characteristics of these motions. Match the situations in Column I with the characteristics in Column II.
Column I
Column II
(A) The object moves on the
(p) The object executes a simple harmonic motion. satisfy
(B) The object moves on the
(C) The object is attached to one end of a mass-less spring of a given spring constant. The other end of the spring is attached to the ceiling of an elevator. Initially everything is at rest. The elevator starts going upwards with a constant acceleration
(D) The object is projected from the earth’s surface vertically upwards with a speed
Objective Questions II (One or more correct option)
Show Answer
Answer:
Correct Answer: 19.
Solution:
- (A) Compare with the standard equation of SHM
we see that the given motion is SHM with,
(B) The equation shows that the object does not change its direction and kinetic energy of the object keeps on decreasing.
(C) A pseudo force (with respect to elevator) will start acting on the object. Its means position is now changed and it starts SHM.
(D) The given velocity is greater than the escapevelocity
towards infinity with decreasing speed.