State the quantities which possesses the following unit: kgm2/s2
Work and Power
Work and Heat
Force and Energy
Force and Power
Work and Energy
kgm2 / s2 = kgm / s2 x m = N xm = joule → Unit of work or energy
Which of the following define the work most accurately? 1. Work is the product of displacement and component of force in the direction of displacement. 2. Work is the product of force and displacement. 3. Work is the product of force and component of displacement in the direction of force. 4. Work is the product of distance and force applied.
Why work is scalar quantity ? In formula it uses force which is vector quantity and displacement which is a part of vector quantity, then why work is scalar quantity ?