Question

Can work be done on a system if there is no motion?Select one:O A. Yes, if the sum of the external forces is zero.O B. Yes, if an external force is acting on the system,O C. No, since a system which is not moving has no energyO D. Yes, since motion is only relative.OE. No, since work involves a non-zero displacement.

Answer 1

E. No, since work involves a non-zero displacement

Step-by-step explanation

Work done on an object is given by,

`W=F\cdot d\cdot\cos \theta`

Where W is work, F is the force applied on the object, d is the displacement of the object and θ is the angle between the applied force and the displacement.

Note that if there's no motion, then d = 0. Because d is multiplying the other variables, if d = 0 then work is zero as well.

Hence, the answer is option E.