Orbital Mechanics for Engineering Students
4th Edition |question and answers |grade
A+| pass guaranteed
A uniform meter stick of mass 0.20 kg is pivoted at the 20 cm mark. Where should one hang a
mass of 0.50 kg to balance the stick?
(A) 16 cm
(B) 36 cm
(C) 44 cm
(D) 46 cm
36 cm
A uniform meterstick is balanced at its midpoint with several forces applied as shown below. If
the stick is in equilibrium, the magnitude of the force X in newtons (N) is
(A) 50 N
(B) 100 N
(C) 200 N
(D) 300 N
50 N
,A door has hinges on the left hand side. Which force produces the largest torque? The
magnitudes of all forces are equal:
(A) F perpendicular at pivot point
(B) F diagonally outward away from door
(C) F perpendicular to end of door
(D) F diagonally inward to door
F perpendicular to end of door
A meterstick is supported at each side by a spring scale. A heavy mass is then hung on the
meterstick so that the spring scale on the left hand side reads four times the value of the spring
scale on the right hand side. If the mass of the meterstick is negligible compared to the hanging
mass, how far from the right hand side is the large hanging mass?
(A) 25 cm
(B) 67 cm
(C) 75 cm
(D) 80 cm
80 cm
A uniform meter stick has a 45.0 g mass placed at the 20 cm mark as shown in the figure. If a
pivot is placed at 42.5 cm mark and the meter stick remains horizontal in static equilibrium,
what is the mass of the meter stick?
(A) 45.0 g
, (B) 72.0 g
(C) 120.0 g
(D) 135.0 g
135 g
A massless rigid rod of length 3d is pivoted at a fixed point W, and two forces each of magnitude
F are applied vertically upward as shown. A third vertical force of magnitude F may be applied,
either upward or downward, at one of the labeled points. With the proper choice of direction at
each point, t he rod can be in equilibrium if the third force of magnitude F is applied at point:
(A) Y only
(B) V or X only
(C) V or Y only
(D) V, W, or X
V or X only
A 5-meter uniform plank of mass 100 kilograms rests on the top of a building with 2 meters
extended over the edge as shown. How far can a 50-kilogram person venture past the edge of
the building on the plank before the plank just begins to tip?
(A) 0.5 m
(B) 1 m
(C) 1.5 m
(D) 2 m
1m
4th Edition |question and answers |grade
A+| pass guaranteed
A uniform meter stick of mass 0.20 kg is pivoted at the 20 cm mark. Where should one hang a
mass of 0.50 kg to balance the stick?
(A) 16 cm
(B) 36 cm
(C) 44 cm
(D) 46 cm
36 cm
A uniform meterstick is balanced at its midpoint with several forces applied as shown below. If
the stick is in equilibrium, the magnitude of the force X in newtons (N) is
(A) 50 N
(B) 100 N
(C) 200 N
(D) 300 N
50 N
,A door has hinges on the left hand side. Which force produces the largest torque? The
magnitudes of all forces are equal:
(A) F perpendicular at pivot point
(B) F diagonally outward away from door
(C) F perpendicular to end of door
(D) F diagonally inward to door
F perpendicular to end of door
A meterstick is supported at each side by a spring scale. A heavy mass is then hung on the
meterstick so that the spring scale on the left hand side reads four times the value of the spring
scale on the right hand side. If the mass of the meterstick is negligible compared to the hanging
mass, how far from the right hand side is the large hanging mass?
(A) 25 cm
(B) 67 cm
(C) 75 cm
(D) 80 cm
80 cm
A uniform meter stick has a 45.0 g mass placed at the 20 cm mark as shown in the figure. If a
pivot is placed at 42.5 cm mark and the meter stick remains horizontal in static equilibrium,
what is the mass of the meter stick?
(A) 45.0 g
, (B) 72.0 g
(C) 120.0 g
(D) 135.0 g
135 g
A massless rigid rod of length 3d is pivoted at a fixed point W, and two forces each of magnitude
F are applied vertically upward as shown. A third vertical force of magnitude F may be applied,
either upward or downward, at one of the labeled points. With the proper choice of direction at
each point, t he rod can be in equilibrium if the third force of magnitude F is applied at point:
(A) Y only
(B) V or X only
(C) V or Y only
(D) V, W, or X
V or X only
A 5-meter uniform plank of mass 100 kilograms rests on the top of a building with 2 meters
extended over the edge as shown. How far can a 50-kilogram person venture past the edge of
the building on the plank before the plank just begins to tip?
(A) 0.5 m
(B) 1 m
(C) 1.5 m
(D) 2 m
1m
