Unit Test #97

Select your answers to the following 5 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

Q1:

 

If x = a cos(nt + α) and particle starts at centre O then α equals:

A. 0

B. 2π

C. π

D. π/ 2

Answer 1:

 

Q2:

 

If x = 4 cos(πt + π/3)

The period is:

A. 2

B. π/ 3

C. 1

D. π

Answer 2:

 

Q3:

 

The simple harmonic motion

x = a cos(nt + α)

has a frequency of 10. The value of n is:

A. 0.1

B. 20π

C. 20/ π

D. π/ 20

Answer 3:

 

Q4:

 

The simple harmonic motion

x = 17cos(nt + α)

has a velocity of 150 m/s when x = 8 metres.

Then n =

A. 0.52

B.100

C.10

D. 0.27

Answer 4:

 

Q5:

 

The maximum speed of a simple harmonic motion is 10 m/s and its frequency is 5.

Then the amplitude is:>

A. 1/ π

B. 25/ π

C.1

D. π

Answer 5: