A block slides down a plane inclined at 35 degrees from horizontal. Find the magnitude of the acceleration of the block if the coefficient of kinetic friction between the block and the plane is 0.2. (Hint: While not obvious, you have all of the information you need.) 4.02 m/s2 2.01 m/s2 O 9.81 m/s2 8.04 m/s2

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Jin
A block slides down a plane inclined at 35 degrees from horizontal. Find the magnitude of the acceleration of the block if
the coefficient of kinetic friction between the block and the plane is 0.2. (Hint: While not obvious, you have all of the
information you need.)
4.02 m/s2
2.01 m/s2
9.81
m/s?
O 8.04 m/s2
oin
If only conservative forces act on an object
the total mechanical energy of the system is constant in time.
friction can be accounted for by assuming constant kinetic energy.
drag forces can be converted into potential energy.
the kinetic energy of the system is conserved.
Transcribed Image Text:Jin A block slides down a plane inclined at 35 degrees from horizontal. Find the magnitude of the acceleration of the block if the coefficient of kinetic friction between the block and the plane is 0.2. (Hint: While not obvious, you have all of the information you need.) 4.02 m/s2 2.01 m/s2 9.81 m/s? O 8.04 m/s2 oin If only conservative forces act on an object the total mechanical energy of the system is constant in time. friction can be accounted for by assuming constant kinetic energy. drag forces can be converted into potential energy. the kinetic energy of the system is conserved.
ve A
A string of length 1.00 m and negligible mass hangs from a ceiling and supports a bob (i.e. a small mass) attached on its
end. The bob is set into uniform circular motion of radius 0.31 m, the string sweeping out a cone. What is the speed of
the mass? (Hint: Draw a detailed picture labeling and indentifying all known lengths, select a coordinate system, give a
name to quantitues you might need that are not specified, e.g. angles. Identify all forces and accelerations, labeling
directions. Apply appropriate Newton Laws to find the speed.
Cord
Bob
O 10.0 m/s
3.0 m/s
4.0 m/s
1.0 m/s
Transcribed Image Text:ve A A string of length 1.00 m and negligible mass hangs from a ceiling and supports a bob (i.e. a small mass) attached on its end. The bob is set into uniform circular motion of radius 0.31 m, the string sweeping out a cone. What is the speed of the mass? (Hint: Draw a detailed picture labeling and indentifying all known lengths, select a coordinate system, give a name to quantitues you might need that are not specified, e.g. angles. Identify all forces and accelerations, labeling directions. Apply appropriate Newton Laws to find the speed. Cord Bob O 10.0 m/s 3.0 m/s 4.0 m/s 1.0 m/s
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