Question

The work done in lifting a brick of mass 2kg through a height of 5m above the ground will be
(A)2.5J
(B)10J
(C)50J
(D)100J

Answer 1

Answer:

D. 100 J

Explanation:

Given

Mass (m) = 2 kg

Height (h) = 5 m

Acceleration due to gravity (g) = 10 m/s²

Now

Work done(W)

= m * g * h

= 2 * 10 * 5

= 100 Joule

Hope it will help :)❤

Answer 2

The work done in uplifting a brick having a mass of 2kg along with a height of 5m above ground level would be:

D). 100 J

Given that,

Mass of the brick $= 2Kg$

Height of the brick $= 5m$

As we know,

Work Done (W) $= mgh$

where

m = Mass

g = Acceleration due to gravity

h = height

A.T.Q.

By substituting the given values, we get;

$Work Done (W)$ $= 2$ × $10$ × $5$            (taking $g = 10 m/s^2$)

$= 100 J$

Thus, the work done is 100 J and hence, option D is the correct answer.

Learn more about 'Work Done' here:

brainly.com/question/13662169