Questions
Starting from the origin a body oscillates simple harmonically with a period of 2 s. After what time will its kinetic energy be 75% of the total energy?
detailed solution
Correct option is C
Velocity =A ω cos ωt KE=12mv2=12mA2ω2cos2ωt=3412mA2ω2 cos ωt=32⇒ωt=π6⇒t=16secTalk to our academic expert!
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One end of an ideal spring is connected with a smooth block with the other end with rear wall of driving cabin of a truck as shown in figure. Initially, the system is at rest. If truck starts to accelerate with a constant acceleration ‘a’ , then the block (relative to truck ):
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