There are 3 problems please answer all of them ments52207 session masterinp Prob

Question

There are 3 problems please answer all of them ments52207 session masterinp Problem 4.51- Copy Part A The founEgai shons a bloc sma Apply Newton's second aw to ind the formula for the acoeleraion of the system ignore friction and the manses of the puley and cond connecled by a a second block Express your answer in terms of the variablesa.m and appropriate constants Part B Appy Neons second w to fed the formua for the tension in the cord igore iction and the masses of the ulley and cord Express your answer in terms of the variables m.mp and appropriate constants T. DELL F10 F11 F12 Prtscr t Delete

Explanation / Answer

Question 4.52

ma = 15 kg
mb = 4 kg

Let the tension in the string be T

Equating the forces acting on block B :
T - mb*g = mb*a
T = mb*(g + a)

Block B is moving with an acceleration of 9.8 m/s^2

Equating the forces acting on block A :
T = ma*a
mb*(g + a) = ma*a
4*(9.8 + a ) = 15*a
a = 3.56 m/s^2

Question 4.54

Let T = tension in the cord
For motion of M kg block downwards,
Mg - T = Ma
and for the motion of m kg block upwards,
T - mg = ma

Taking the ratio,
(Mg - T) / (T - mg) = M/m
=> Mmg - Tm = TM - Mmg
=> T
= 2Mmg / (M + m)
= 2 * 3.2 * 1.2 * 9.81 / (3.2 + 1.2)
= 17.13 N

PS : the first question is not visible. Please post it separately.

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