A person lifts boxes of equal weight on to a platform.
Which quantity will not affect the work done by the person?
1 )
the height of the platform above the ground
2 )
the number of boxes lifted
the time taken to lift the boxes
4 )
the weight of the boxes
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!