Question

Climbing a tree shows positive or negative work done?

Answer 1

since we apply force downwards and we go upwards .
the force and displacement is opposite in direction
since work =force ×displacement×cos ¤
where ¤ is angle between force and displacement. in this case 180
cos 180=-1
so it is negative

Answer 2

Explanation

since we apply force downwards and we go upwards .

the force and displacement is opposite in direction

since work =force ×displacement×cos ¤

where ¤ is angle between force and displacement. in this case 180

cos 180=-1

so it is negative