Question

Hep Needed! (see attachment)

Answer 1

@Yahoo! @shamim @agent0smith

Answer 2

@greeky42....u have answer key with u?

Answer 3

Yeah, it's 17.241 kg.

Answer 4

and wat is time?

Answer 5

What are you talking about?

Answer 6

a = (v-u )/ t = 2.2/9.8 = 0.22

Answer 7

KE = 1/2 (m_1 + m_2) v^2 = 81 J
v= 2.2

Answer 8

m2g - T = m2a

T-m1g = m1a


T = m2(g-a) ------ 1

T = m2 ( 9.81 - 0.22)

T = 9.6m2


T = m1(g+a)

T = 10m1 ------ 2

10m1 = 9.6m2

m1 = 0.96m2

Answer 9

f = m_2 a = (m_2 - m_1 )g
a = (m_2 - m_1)g/m_2
-------------------
use it here,
s = ut + 1/2 at^2 , ut = 0, s=10.89, t=9.9
------------------------------------
you have two equations for m_1 and m_2
solve them.

Answer 10

v^2 - u^2 = 2as

v^2 = 2*0.22 * 10.89 = 4.8


K.E = mv^2/2

81 = (m1+m2)4.8/2

81 = 1.96m2 /2.4

m2 = 17.21Kg

Answer 11

i solved ur problem but my net connection was disturbing.

Answer 12

Thanks, everyone.

Answer 13

Sorry My last Line is Mistaken..

81 = 1.96m2 * 2.4

Answer 14

m2 = 17.21 kg