A) six
B) five
C) four
D) three
Correct Answer: D
Solution :
The given equation is: \[y=2(2{{\cos }^{2}}t/2)\,\sin (1000)t\] \[=2(1+\cos t)\sin (1000)t\] \[=2\cos t\sin (1000)\,t+2\sin (1000)t\] \[=\sin (1001)\,t+\sin (999)\,t+2\sin (1000)t\] Thus 3 independent harmonic motions superimpose.You need to login to perform this action.
You will be redirected in
3 sec