a coolie places a mass of 40kg on his head and walks 10meter on a Railway platform what is the work done by him against gravitation
Answers
Answered by
77
Given
- Mass = 40 kg
- Distance = 10 m
To Find
- Work done against Gravitation
Solution
● F = ma
● Work = Force × Distance
✭ Force Applied :
→ F = ma
- F = Force = ?
- M = Mass = 40 kg
- a = Acceleration = 10 m/s²
→ F = 40 × 10
→ F = 400 N
━━━━━━━━━━━━━━━━━━━━━
✭ Work Done against Gravitation :
→ Work = Force × Distance
→ Work = 400 × 10
→ Work = 4000 J
or
→ Work = 4000/1000
→ Work = 4 KJ
BrainIyMSDhoni:
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Answered by
48
Answer:
Given :-
- Mass = 40 kg
- Distance travelled = 10 m
To Find :-
Work done by him against gravitation
Solution :-
Firstly we will find its force
F = ma
Here,
F = Force
M = Mass
A = Acceleration
Now,
F = 40 × 10
F = 400 N
Now,
Let's find Work against gravitation
Work = Force × Distance
Work = 400 × 10
Work = 4000 J
W = 4000/1000 = 4 KJ
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