Engineering Physics I Mock Test 6

1. A particle is executing simple harmonic motion at midpoint of mean position and extremely. What is the potential energy in terms of total energy (E)?

2. A spring 40mm long is stretched by the acceleration of a force. If 10N force is required to stretch the spring through 1mm, then work done in stretching through 40mm is?

3. A body executes simple harmonic motion. The potential energy, the kinetic energy and total energy are measured as a function of displacement x. Which of the following statements is true?

4. A simple pendulum is executing simple harmonic motion with a time period T. If the length of the pendulum is increased by 21%, the increase in the time period of the pendulum of increased length is?

5. The ratio of the vapour densities of two gases at a given temperature is 9:8. The ratio of the rms velocities of their molecules is ___________

6. The total energy of a particle performing simple harmonic motion depends on ___________

7. A simple pendulum has a time period T₁, when on the earth’s surface; and T₂, when taken to a height R above the earth’s surface (R is the radius of the earth). The value of T₂/T₁ is?

8. A motion can be oscillatory but not simple harmonic.

9. A body executes simple harmonic motion with amplitude A. At what displacement from the mean position is the potential energy of the body one fourth of its total energy?

10. A simple harmonic oscillator has an amplitude A and time period T. The time require by it to travel from x = A to x = A/2 is ___________