AITS mechanics

Block A is almost massless.and velocity is given to (mass=1kg) v=√8gH

Find acceleration of A at initial instant.

13 Answers

11
Mani Pal Singh ·

bhai yeh almost massless hai to why not erase it ???

and mass =1 ??

33
Abhishek Priyam ·

1 kg

1
Vivek ·

yeah even i wanted to know

33
Abhishek Priyam ·

Hint:
Don see fiitj solution :P
and for A m=0 so F=ma so F=0

1
voldy ·

50 ms-2 ???[7]:P

pata nahin I'm ont convinced

the tension is found 50 N , then kya karna hai ???

how to find acceleration ???

11
virang1 Jhaveri ·

Acceleration of A will g + x
x will the acceleration of the mass 1 kg to reach the velocity v = √8gh in 2h distance

8*g*h = 2*x * 2h
2g = x
Acceleration = g + 2g
Accerelaration = 3g

13
Двҥїяuρ now in medical c ·

i am getting 'g'

must be wrong

1
chandu emani ·

i think it is g√5

1
chandu emani ·

1
sriraghav ·

I think it is g..... i doubt it...can u post the soln priyam!!

33
Abhishek Priyam ·

s=1/2gt2 for very very small time 't'
y=vt

v=√8gH

x=1/2at2 a is acceleration of A

now (2H+s)2+y2=(2H+x)2
4H2+(1/2gt2)2+2gHt2+8gHt2=4H2+(1/2at2)2+2aHt2

(1/2gt2)2+2gHt2+8gHt2=(1/2at2)2+2aHt2

1/4g2t2+2gH+8gH=1/4g2t2+2aH
neglecting t2 terms

a=5g

1
voldy ·

yay mine was correct .
perfect tukka :P

33
Abhishek Priyam ·

First I did the same. [3]
and got same answer

g+v2/2H=5g

but am not fully convinced about v2/2H.

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