Question

6. A body of mass 500g is taken to a shelf 50cm above a table of legs 50cm. The
energy acquired by that body is
(a) 4.9J
(b) 49J
(c) 490J
(d) 0.49J
​

Answer 1

Answer:-

• Mass=m=500g=0.5kg
• Height=50+50=100cm=1m=h
• Acceleration due to gravity=9.8m/s^2

We know

$\boxed{\sf E_P=mgh}$

$\\ \sf\longmapsto E_p=0.5\times 1\times 9.8$

$\\ \sf\longmapsto E_P=4.9J$