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Grade: 12

                        

Hello Sir, Plz tell me d solution of work n energy chapter 8 ....ques no.41

9 years ago

Answers : (2)

Sudheesh Singanamalla
114 Points
							

m = 5kg, x = 10cm = 0.1m,

v = 2m/sec, h =?

G = 10m/sec2

S0, k = x mg

= 0.1 50 = 500 N/m

Total energy just after the blow E = ½ mv2 + ½ kx2 …(i)

Total energy a a height h = ½ k (h – x)2 + mgh …(ii)

½ mv2 + ½ kx2 = ½ k (h – x)2 + mgh

On, solving we can get, H = 0.2 m = 20 cm

 

Please approve !

9 years ago
vikas askiitian expert
509 Points
							

Q-41.

m = 5kg, x = 10cm = 0.1m, v = 2m/sec,


h =? G = 10m/sec2


S0, k =mg/x  =50/.1 = 500



Total energy just after the blow E = ½ mv2 + ½ kx2 …(i)


Total energy a a height h = ½ k (h – x)2 + mgh …(ii)


½ mv2 + ½ kx2 = ½ k (h – x)2 + mgh


On, solving we can get,


H = 0.2 m = 20 cm

9 years ago
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