Question

6. A body of mass 100 kg is lifted to a height of 10 m from the ground vertically straight up. The
work done by the gravity is
(a) 100 J
(b) 1000 J
(c) 10 J
(d) 10000 J
​

Answer 1

Answer:

W = Fd = 1000 Joules.....

Answer 2

$\huge\fcolorbox{red}{cyan}{Option\:D\::\:10000\:J}$

Explanation:

Work Done = Energy Consumed

• Mass(m) = 100 kg

• Height(s) = 10 m

• Accleration Due to Gravity(g) = 10m/s²

Since The Body Is Being Lifted Therefore it Must Have Potential Energy :-

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

$\bf\color{purple}{Potential\:Energy=m\times g \times s} \\ => \bf{Lets\:Put\:The\:The\:Values} \\ => 100 \times 10 \times 10 \\ => \boxed{10000\:J}$

Thereforw The Work Done Against Gravity is 10000 Joules .

Hope it helped