Question

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..​

Answer 1

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