5. Two blocks of different metals are sitting on a steel platform as shown. The blocks are connected by a cord running over a frictionless pulley. The aluminum block has mass ml 4.60 kg and the copper block has mass m2 = 6.25 kg, and 0 = 31.5°. The blocks are released from rest. Will they move? If the blocks move, what is the magnitude of the acceleration (in m/s2) of the two-block system? If the blocks move, what is the magnitude of the tension force (in N) in the cord? If the blocks do not move, what is the sum of the magnitudes of the forces of friction (in N) acting on the blocks? Coefficients of Friction PA Rubber on concrete 1.0 08 Steel on steel Aluminum 0.74 0.57 Aluminum on steel 0.61 0.47 Glass on glass 0.94 0.4 Copper on steel Wood on wood 0.53 0.36 Сopper 0.25-0.5 0.2 Waxed wood on wet snow 0.14 0.1 Waxed wood on dry snow 0.04 Metal on metal (lubricated) 0.15 0.06 Telon on Teflon 0.04 004 Steel Ice on ce 01 003 Synoval joinis in humans 0.01 0.003 Ne All alo are pr a In wimeGs the eeikteni of niomh can
5. Two blocks of different metals are sitting on a steel platform as shown. The blocks are connected by a cord running over a frictionless pulley. The aluminum block has mass ml 4.60 kg and the copper block has mass m2 = 6.25 kg, and 0 = 31.5°. The blocks are released from rest. Will they move? If the blocks move, what is the magnitude of the acceleration (in m/s2) of the two-block system? If the blocks move, what is the magnitude of the tension force (in N) in the cord? If the blocks do not move, what is the sum of the magnitudes of the forces of friction (in N) acting on the blocks? Coefficients of Friction PA Rubber on concrete 1.0 08 Steel on steel Aluminum 0.74 0.57 Aluminum on steel 0.61 0.47 Glass on glass 0.94 0.4 Copper on steel Wood on wood 0.53 0.36 Сopper 0.25-0.5 0.2 Waxed wood on wet snow 0.14 0.1 Waxed wood on dry snow 0.04 Metal on metal (lubricated) 0.15 0.06 Telon on Teflon 0.04 004 Steel Ice on ce 01 003 Synoval joinis in humans 0.01 0.003 Ne All alo are pr a In wimeGs the eeikteni of niomh can
5. Two blocks of different metals are sitting on a steel platform as shown. The blocks are connected by a cord running over a frictionless pulley. The aluminum block has mass ml 4.60 kg and the copper block has mass m2 = 6.25 kg, and 0 = 31.5°. The blocks are released from rest. Will they move? If the blocks move, what is the magnitude of the acceleration (in m/s2) of the two-block system? If the blocks move, what is the magnitude of the tension force (in N) in the cord? If the blocks do not move, what is the sum of the magnitudes of the forces of friction (in N) acting on the blocks? Coefficients of Friction PA Rubber on concrete 1.0 08 Steel on steel Aluminum 0.74 0.57 Aluminum on steel 0.61 0.47 Glass on glass 0.94 0.4 Copper on steel Wood on wood 0.53 0.36 Сopper 0.25-0.5 0.2 Waxed wood on wet snow 0.14 0.1 Waxed wood on dry snow 0.04 Metal on metal (lubricated) 0.15 0.06 Telon on Teflon 0.04 004 Steel Ice on ce 01 003 Synoval joinis in humans 0.01 0.003 Ne All alo are pr a In wimeGs the eeikteni of niomh can
Two blocks of different metals are sitting on a steel platform as shown. The blocks are connected by a cord running over a frictionless pulley. The aluminum block has mass m1 = 4.60 kg and the copper block has mass m2 = 6.25 kg, and ? = 31.5°. The blocks are released from rest. Will they move? If the blocks move, what is the magnitude of the acceleration (in m/s2) of the two-block system? If the blocks move, what is the magnitude of the tension force (in N) in the cord? If the blocks do not move, what is the sum of the magnitudes of the forces of friction (in N) acting on the blocks?
Transcribed Image Text:Two blocks of different metal X
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10 kg
3.0 kg
5. Two blocks of different metals are sitting on a steel platform as shown. The blocks are connected by a cord
running over a frictionless pulley. The aluminum block has mass ml =4.60 kg and the copper block has
mass m2 = 6.25 kg, and0 = 31.5°. The blocks are released from rest. Will they move? If the blocks
move,
what is the magnitude of the acceleration (in m/s2) of the two-block system? If the blocks move, what is the
magnitude of the tension force (in N) in the cord? If the blocks do not move, what is the sum of the
magnitudes of the forces of friction (in N) acting on the blocks?
Coefficients of Friction
Rubber on concrete
10
0.8
Steel on steel
0.74
0.57
Aluminum
Aluminum on Seel
0.61
0.47
Glass on glas
0.94
0.4
0.53
0.36
025-05
0.2
Copper
Wood on wooxd
Waxed wood on wet snow
0.14
0.1
0.04
Waxed woolon des snow
0.06
Metal on metollubncated)
04
004
01
0,03
Steel
1 on we
0.003
Definition Definition Force that opposes motion when the surface of one item rubs against the surface of another. The unit of force of friction is same as the unit of force.
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