**Question**

**A bag of wheat weighs 75 kg. Calculate the height to which it should be raised so that its potential energy is 7350 J. (Given g = 9.8 m/s ^{2}) [Ans. 10 m] **

**Answer**

Mass (m) = 75 kg

Height (h) = To be calculated

Potential Energy (PE) = 7350 J

Now, PE = mgh

height (h) = PE\over mg

= 7350\over 75 × 9.8

= 10 m