Question

Two blocks (m,=mz=2.99kg) are connected by a string that passes through a pulley of mass M=7.35kg and radius R=33cm as shown in the Figure. The first block with
mass shoes on an inclined plane when the system is released. The inclinod plane makes an anglé 8-68° with the horizontal and the kinetic friction coefficient between
the inclined plane and m, is HA=0.32 . Determine the speed of my after it travels h=4.6m - (Take g=9.81 mus", and pulley=1/2 MR2) Express your answer using two
decimal places
0
5
IR
m​

Answer 1

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11th

Physics

Laws of Motion

Motion Along a Rough Inclined Plane

Two blocks of masses M1 = 4...

PHYSICS

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Asked on December 26, 2019 by

Mahavir Hule

Two blocks of masses M

1

=4kg and M

2

=6kg are connected by a string of negligible mass passing over a frictionless pulley as shown in the figure. The coefficient of friction between the block M

1

and the horizontal surface is 0.4. When the system is released, the masses M

1

and M

2

start accelerating. What additional mass m should be placed over M

1

so that the masses (M

1

+m) slide with a uniform speed?

1019726

HARD

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Study later

ANSWER

For uniform motion of mass M

2

-

T=M

2

g

For uniform motion of (M

1

+m)-

T=f

And, f≤μN=μ(M

1

+m)g

⟹μ(M

1

+m)g≥M

2

g

⟹m≥

μ

M

2

−M

1

⟹m≥

0.4

6

−4

⟹m≥11kg

Hence, m=12kg