- #1
lil2ishaq
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I have tried to get this problem many different ways but still don't get it.
A 1.00 kg aluminum block and a 8.00 kg copper block are connected by a light string over a frictionless pulley. The two blocks are allowed to move on a fixed steel block wedge (of angle θ = 40.0°) as shown in Figure P4.63.
View attachment p4-63.bmp
Figure P4.63
Making use of Table 4.2, determine the following.
(a) the acceleration of the two blocks
Your answer differs from the correct answer by 10% to 100%. m/s2
(b) the tension in the string N
Coefficients of Frictiona µs µk
Steel on steel 0.74 0.57
Aluminum on steel 0.61 0.47
Copper on steel 0.53 0.36
Rubber on concrete 1.0 0.8
Wood on wood 0.25-0.5 0.2
Glass on glass 0.94 0.4
Waxed wood on wet snow 0.14 0.1
Waxed wood on dry snow - 0.04
Metal on metal (lubricated) 0.15 0.06
Ice on ice 0.1 0.03
Teflon on Teflon 0.04 0.04
Synovial joints in humans 0.01 0.003
a All values are approximate.
A 1.00 kg aluminum block and a 8.00 kg copper block are connected by a light string over a frictionless pulley. The two blocks are allowed to move on a fixed steel block wedge (of angle θ = 40.0°) as shown in Figure P4.63.
View attachment p4-63.bmp
Figure P4.63
Making use of Table 4.2, determine the following.
(a) the acceleration of the two blocks
Your answer differs from the correct answer by 10% to 100%. m/s2
(b) the tension in the string N
Coefficients of Frictiona µs µk
Steel on steel 0.74 0.57
Aluminum on steel 0.61 0.47
Copper on steel 0.53 0.36
Rubber on concrete 1.0 0.8
Wood on wood 0.25-0.5 0.2
Glass on glass 0.94 0.4
Waxed wood on wet snow 0.14 0.1
Waxed wood on dry snow - 0.04
Metal on metal (lubricated) 0.15 0.06
Ice on ice 0.1 0.03
Teflon on Teflon 0.04 0.04
Synovial joints in humans 0.01 0.003
a All values are approximate.