Question

2. Choose the correct option.
(1 mark)
An object was dropped from a height, 'H', where its gravitational potential energy was
found to be 9800 J. When it reaches the height {G'
, its
a) total mechanical energy will be < 9800 J
b) total mechanical energy will be = 9800 J
c) total mechanical energy will be = - 9800 J
d) total mechanical energy will be > 9800 J

Answer 1

Answer:

P.E = mgh

9800=100×9.8×h

h=

100×9.8

9800

h=10m.

∴ The bag of wheat should be raised to a height of 10 m.