previous 20 of 25 next Problem 4.33 Part A Determine the magnitude of the accele
ID: 1794897 • Letter: P
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previous 20 of 25 next Problem 4.33 Part A Determine the magnitude of the acceleration of the system A block with mass mA 140 kg on a smooth horizontal surface is connected by a thin cord that passes over a pulley to a second block with mass m 6.0 kg which hangs verticaly. (Eigure 1) Express your answer to two significant figures and include the appropriate units. Value m/s Submit My Answers Give Up Part B inially m is at rest 1 250 m trom the edge of the table, haw long does i take to reach the edge of the table the system is allowed to move freey? 35 Express your answer to two significant figures and include the appropriate units 28 The m1 is really big compared to m2 alue S Fiauro of 1 Submit My Answers Ghve Up Part c In I MB 1.0 kg, how large must iTA be if the acceleraion of the system is to bo kep! Expre ss your answer to two significant figures and include the appropriate units PTE My Answers Gire Up Submit Provide EoodbackExplanation / Answer
here,
mass of A , mA = 14 kg
mass of B , mB = 6 kg
a)
the accelration , a= net force /effective mass
a = ( mB * g)/( mA + mB)
a = ( 6 * 9.81) /( 14 + 6)
a = 2.94 m/s^2
b)
s = 1.25 m
let the time taken be t
s = 0 + 0.5 * a * t^2
1.25 = 0 + 0.5 * 2.94 * t^2
solving for t
t= 0.92 s
c)
mB = 1 kg
let the mass be mA
a = mB * g /( mA + mB)
g = g /( mA + 1)
mA = 0 kg
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