Question

Plsss fill the blank with correct answer(best anwser gets to be BRAINLIEST):

A boy of mass 'M' is lifting a block of mass 'm', work done by the boy in lifting the block upto the heght 'h' is equal to __________

Answer 1

Answer :-

A boy of mass 'M' is lifting a block of mass 'm', work done by the boy in lifting the block upto the height 'h' is equal to mgh.

Explanation :-

Work done=Force * Displacement ......(1)

Then,

⇒ Force= mass * acceleration

⇒ Here acceleration is due to gravity(g)

Then,

⇒ Force = m * g ......(2)

From (1) and (2)

⇒ Work done = m * g * displacement ......(3)

Then,

Here displacement is 'h'

⇒ Displacement = h .......(4)

Then ,

From (3) and (4)

Work = m*g*h

Work=mgh

∴The boy is lifting the object upwards. So, the work done becomes mgh.

Answer 2

Answer:

n

Explanation:

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