The mechanism set up with m, m, and weightless pulleys is as shown in the figure. Then, the masses are released. Static and kinetic friction between the inclined plane and m, are 0.6 and 0.5 respectively. What are the accelerations of m, and m,? (g = 10 m / s². Frictions and mass of the pulley are ignored.) %3D

International Edition---engineering Mechanics: Statics, 4th Edition
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Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...
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Q1.
m-1 kg
m,=4 kg
The mechanism set up with m,, m, and weightless pulleys is as
shown in the figure. Then, the masses are released.
Static and kinetic friction between the inclined plane and m, are
0.6 and 0.5 respectively. What are the accelerations of m, and
m,?
(g = 10 m / s². Frictions and mass of the pulley are ignored.)
Q2.
300 m/s
.*........ yatay
100 m/s
320 m
x=?
A plane is flying horizontally at an altitude of 320 m with 300
m/s speed. It launches its bomb with 100 m/s speed relative to
the plane as shown. How many meters away from the castle
should the plane launch its bomb to hit the castle. (g=10 m/s²,
sin370=0.6; cos37°=0.8)
Q3.
2 kg
The object in the frictionless cone in the figure is making a
uniform circular motion. Calculate,
a) the normal force that the cone exerts on the object,
b) centripetal force applied to the body,
c) Find the speed of the object.
Transcribed Image Text:Q1. m-1 kg m,=4 kg The mechanism set up with m,, m, and weightless pulleys is as shown in the figure. Then, the masses are released. Static and kinetic friction between the inclined plane and m, are 0.6 and 0.5 respectively. What are the accelerations of m, and m,? (g = 10 m / s². Frictions and mass of the pulley are ignored.) Q2. 300 m/s .*........ yatay 100 m/s 320 m x=? A plane is flying horizontally at an altitude of 320 m with 300 m/s speed. It launches its bomb with 100 m/s speed relative to the plane as shown. How many meters away from the castle should the plane launch its bomb to hit the castle. (g=10 m/s², sin370=0.6; cos37°=0.8) Q3. 2 kg The object in the frictionless cone in the figure is making a uniform circular motion. Calculate, a) the normal force that the cone exerts on the object, b) centripetal force applied to the body, c) Find the speed of the object.
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