Which of the following is the best example of work being done on an object?
A)holding a 50 kg barbell
B)lifting a bag of groceries
C)keeping a board in place
D)pushing on a car that will not move

Question

Quizplus · Accepted Answer

Work is defined as force applied over a distance. Lifting a bag of groceries involves applying a force (upwards to counteract gravity) and moving the groceries over a distance (from the ground to a higher position), which fits the definition of work being done. Choices A, C, and D involve applying force but without movement in the direction of the force, so no work is done in those scenarios according to the physical definition of work.

Which of the Following Is the Best Example of Work