## WORK ENERGY AND POWER Quiz-23

Work power energy is the most important chapter when it comes to mechanics, for JEE (Advanced). The chapter is quite tricky and takes a lot of time and devotion on your part to understand and master. But this chapter is a complete gold medal for almost all the questions of the mechanics can be solved by the work power energy approach if you master this topic..

Q1.
•  Mgx
•  (1/2)kx^2
•  -(1/2)kx^2
•  Mgx+(1/2)kx^2
Solution
During compression, displacement =x, Hence, work done by gravity =Mgx

Q2.
•  50/3 J
•  100/3 J
•  75 J
•  None of these
Solution

Q3.
•   √60 m/s
•  √45 m/s
•  √30 m/s
•  √15 m/s
Solution

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BEST NEET COACHING CENTER | BEST IIT JEE COACHING INSTITUTE | BEST NEET & IIT JEE COACHING: Work Energy and Power-Quiz-23
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