Question

A girl weighing 400N climbs a vertical ladder. If thevalue of g is 10m/s2 , the work done by her after climbing 2m will be

Answer 1

Force =400N

Distance=2m

Work done=?

1g =10m/s2

Work done= force × distance

=400×2×10

=8000Joule or Newton/metre

Answer 2

Answer:

800 J

Explanation:

weight is given 400 N,

We know that weight = mg ,i.e

mg = 400 N

climbing ladder is the work done against gravity.

So here, W = m*g*h

              h = 2 m

               W = 400*2

So work done =  800 J

THANK YOU!