Question

In tug of war, the team that exerts a larger tangential force on the ground wins. Consider the period in which a team is dragging the opposite team by applying a larger tangential force on the ground. List which of the following works are positive, which are negative and which are zero?
(a) work by the winning team on the losing team
(b) work by the losing team on the winning team
(c) work by the ground on the winning team
(d) work by the ground on the losing team
(e) total external work on the two teams.

Answer 1

Explanation:

(a) Work by the triumphant group on the losing group is sure, as the relocation of the losing group is along the power applied by the triumphant group.  

(b) Work by the losing group on the triumphant group is negative, as the relocation of the triumphant group is inverse to the power applied by losing group.  

(c) Work by the ground on the triumphant group is sure.  

(d) Work by the ground on the losing group is negative.  

(e) Total outside work on the two groups is sure.

Answer 2

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