Question

A Pereson is holding a bucked by applying a
force of lon. He moves a horizontal
distance of sm & then climbs up a vert
distance of 10m. Find the total neon
done by him.
•
Caplanation, f= 10N, S = 5m, O=9
0
1000
Cocoso = 10 x 5 x Co​

Answer 1

when the is x−y

⟾ Dist=100km

⟾ =5 hours

⟾ Dist =S×T

⟾ 100=(x−y)5

⟾ x−y=20⟶(I)

when THE is x+y

⟾ Dist=100km

⟾ t=1 hours

⟾ Dist=ST

⟾ 100=(x+y)1

⟾ x+y=100⟶(II)

⟾ x−y=20

⟾ x+y=100

​⟾ 2x=120

⟾ x=60km/h