A porter lifts a luggage of 15kg from the ground and puts it on his head 1.5m above the ground. Calculate the work done by him on the luggage .
Please give this answer also and explain me too . I can't understand this question .
Answers
Answer:
W=F.D
W=MgH
W=15*10*1.5
W=225joule
Explanation:
Here we have given mass of an object and displacement. so we can find work done W=F.D
means work done = force into displacement.
here We know F=Mg so, we can write Mg instead of F and also we can write hight Instead of displacement.......
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.