Question

work done in lifting a mass of 25 kg to a height 5 m
Take g=9.8 m/s2​​

Answer 1

$\bigstar$ Given

• m = 25 kg
• h = 5 m
• g = 9.8 m/s²

$\bigstar$ To find

Work done

$\bigstar$ Solution

We know that

⇒ W=mgh

Here

• W = Work done
• m = Mass
• g = Accl. due to gravity
• h = Height

According to the question

We are asked to find work done

Therefore

We must find “W”

Given that

• m = 25 kg
• h = 5 m
• g = 9.8 m/s²

Substituting the values

We get

⇒ W = 25 x 9.8 x 5 J

Therefore

⇒ W = 1225 J

Hence

$\checkmark$ Work done = 1225 J

Answer 2

Answer:

Given :-

• Work done in lifting a mass of 25 kg to a height 5 m.
• Acceleration due to gravity = 9.8 m/s²

To Find :-

• How much work done by lifting a mass.

Formula Used :-

$\boxed{\bold{\large{Work\: Done\: =\: mgh}}}$

where,

• m = Mass
• g = Acceleration due to gravity
• h = Height

Solution :-

Given :-

• m = 25 kg
• g = 9.8 m/s² (Given)
• h = 5 m

According to the question by using the formula we get,

⇒ Work done = 25 × 9.8 × 5

⇒ Work done = 245 × 5

➠ Work done = 1225 J

$\therefore$ Work done by lifting a mass is 1225 J .

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