Question

a porter liftsa luggage of 15 kg from the ground and puts it on his head 1.5 m above the ground . calculate the work done by him on the luggage​

Answer 1

Answer:

The formula for work, as we know, is Work = Mass x Gravity x Height.

Here, the mass of the luggage is 15 kg, the constant of gravity is 10 m/s^2, and the height is 1.5 m.

Therefore, the total amount of work done can be calculated by multiplying these three values, that is, Work= 15 x 10 x 1.5 = 225 Joules.

Answer 2

Answer:

The work done by porter on the luggage​ is 225 J

Explanation:

Given,

A porter lifts a luggage of mass = 15 kg from the ground.

It's on his head 1.5 m above the ground.

To find: The work done by him on the luggage​

Solution:

here, Force is due to the weight of the luggage.

i.e F = mg , where m = mass of luggage and g = accerleration due to gravity

or, F = 15 * 10 = 150 N

Work done can be given as:

W = F * s

where, F = force and s = displacement i.e 1.5 m

W = 150 * 1.5 = 225 J

Therefore, The work done by porter on the luggage​ is 225 J.