Question

A bag of weight 49 kg is raised to a height 'h' so that its potential energy is 980 J. Find 'h'. (class 9th)

Answer 1

As we know that the formula of PE=m g h
m=49 kg
PE=980 J
acceleration due to gravity (g)=9.8m/S
height=?
PE= m g h
PE×m/g=h
980×49×9.8=h
470596 Joules

Answer 2

m= 49 kg

h=?

Now,

mfg=980J

49×10×h= 980

h=2m

This is the answer to your question.