Question

A woman at mass 60kg lifts a bricks of mass 30kg up a vertical ladder of width 5m width length 6m. What is the work done?

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Answer 1

Answer:

Given that ,

A man whose mass is 50kg climbs up 30 steps of a stair in 30s  

each step is 20 cm high  

Height at 30 steps , h=30×0.2=6 m    

Change in potential energy , =mgh=50×10×6=3000 J  

So, Work done by the man , W=3000 J  

Power used , P=W/t 3000/30 = 100W

Step-by-step explanation:

thanks..

Answer 2

Answer:

meko mnn hi ni krta khyal rkhne ka

tvi to aap jese dost bnaye h ...xd

mera khyal rkhna k liye

or inne dino s aap baat v ni kr rethe

koina choro

gud night

have a devil dreams only