calculate the work done by person in lifting a load of 20 kg from the ground and placing it in 1 metre high on the table..
Share
calculate the work done by person in lifting a load of 20 kg from the ground and placing it in 1 metre high on the table..
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Explanation:
Here the work is done against gravitational force
As work = force* displacement
here force is gravitational force i.e mg
F = mg = 20*10= 200
displacement = 1 m
Work = 200*1= 200 joules
NOTE
If the g value is taken as 9.8 then work will be 196 Joules