ABRET Board Physics
Exam Questions with
Complete Solutions
Guarantee Success
In the situation shown in the figure, a person is pulling with a constant, nonzero force
F⃗ on string 1, which is attached to block A. Block A is also attached to block B via
string 2, as shown.
For this problem, assume that neither string stretches and that friction is negligible.
Both blocks have finite (nonzero) mass.
Which one of the following statements correctly descibes the relationship between
the accelerations of blocks A and B? - ANSWERS--Both blocks have the same
acceleration.
In the situation shown in the figure, a person is pulling with a constant, nonzero force
F⃗ on string 1, which is attached to block A. Block A is also attached to block B via
string 2, as shown.
For this problem, assume that neither string stretches and that friction is negligible.
Both blocks have finite (nonzero) mass. - ANSWERS--How does the magnitude of
the tension in string 1, T1, compare with the tension in string 2, T2?
, This problem concerns the concept of tension in a rope. Consider a rope subjected
to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An
arbitrary point P divides the rope into a left-hand segment L and a right-hand
segment R.
For segment R and segment L to hold together, they must exert forces on each
other. What is the direction of the force exerted on segment R by segment L? -
ANSWERS--Left
This problem concerns the concept of tension in a rope. Consider a rope subjected
to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An
arbitrary point P divides the rope into a left-hand segment L and a right-hand
segment R.
Assume that segment R exerts a force of magnitude T on segment L. What is the
magnitude FLR of the force exerted on segment R by segment L? - ANSWERS--
F(LR) = T
This problem concerns the concept of tension in a rope. Consider a rope subjected
to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An
arbitrary point P divides the rope into a left-hand segment L and a right-hand
segment R.
Now imagine two points, Q and P, that divide the rope into segments L, M ,and R.
(Figure 2)The rope remains stationary. Assume that segment L exerts a force of
magnitude FLM on segment M. What is the magnitude FRM of the force exerted by
segment R on segment M? - ANSWERS--F(RM) = F(LM)
This problem concerns the concept of tension in a rope. Consider a rope subjected
to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An
arbitrary point P divides the rope into a left-hand segment L and a right-hand
segment R.
Now consider a rope that, unlike those usually studied in mechanics problems,
actually has a significant inertia m. The tension at the right end of this rope is T2 and
that at the left end is T1. (Figure 3)The rope has an acceleration arope to the right.
Complete the following equation for the force on the section of the rope of inertia m,
taking the positive direction to be to the right. - ANSWERS--F(rope) = ma(rope) =
T(2) -T(1)
This problem concerns the concept of tension in a rope. Consider a rope subjected
to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An
arbitrary point P divides the rope into a left-hand segment L and a right-hand
segment R.
Which of the following phrases, if they appear in a problem, allow you to assume that
T2=T1 in a horizontally oriented rope? - ANSWERS--The rope is massless.
The rope is moving at constant speed.
Two blocks with masses M1 and M2 hang one under the other. For this problem,
take the positive direction to be upward, and use g for the magnitude of the
acceleration due to gravity.
Find T2, the tension in the lower rope. - ANSWERS--T(2) = M(2)g
Exam Questions with
Complete Solutions
Guarantee Success
In the situation shown in the figure, a person is pulling with a constant, nonzero force
F⃗ on string 1, which is attached to block A. Block A is also attached to block B via
string 2, as shown.
For this problem, assume that neither string stretches and that friction is negligible.
Both blocks have finite (nonzero) mass.
Which one of the following statements correctly descibes the relationship between
the accelerations of blocks A and B? - ANSWERS--Both blocks have the same
acceleration.
In the situation shown in the figure, a person is pulling with a constant, nonzero force
F⃗ on string 1, which is attached to block A. Block A is also attached to block B via
string 2, as shown.
For this problem, assume that neither string stretches and that friction is negligible.
Both blocks have finite (nonzero) mass. - ANSWERS--How does the magnitude of
the tension in string 1, T1, compare with the tension in string 2, T2?
, This problem concerns the concept of tension in a rope. Consider a rope subjected
to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An
arbitrary point P divides the rope into a left-hand segment L and a right-hand
segment R.
For segment R and segment L to hold together, they must exert forces on each
other. What is the direction of the force exerted on segment R by segment L? -
ANSWERS--Left
This problem concerns the concept of tension in a rope. Consider a rope subjected
to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An
arbitrary point P divides the rope into a left-hand segment L and a right-hand
segment R.
Assume that segment R exerts a force of magnitude T on segment L. What is the
magnitude FLR of the force exerted on segment R by segment L? - ANSWERS--
F(LR) = T
This problem concerns the concept of tension in a rope. Consider a rope subjected
to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An
arbitrary point P divides the rope into a left-hand segment L and a right-hand
segment R.
Now imagine two points, Q and P, that divide the rope into segments L, M ,and R.
(Figure 2)The rope remains stationary. Assume that segment L exerts a force of
magnitude FLM on segment M. What is the magnitude FRM of the force exerted by
segment R on segment M? - ANSWERS--F(RM) = F(LM)
This problem concerns the concept of tension in a rope. Consider a rope subjected
to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An
arbitrary point P divides the rope into a left-hand segment L and a right-hand
segment R.
Now consider a rope that, unlike those usually studied in mechanics problems,
actually has a significant inertia m. The tension at the right end of this rope is T2 and
that at the left end is T1. (Figure 3)The rope has an acceleration arope to the right.
Complete the following equation for the force on the section of the rope of inertia m,
taking the positive direction to be to the right. - ANSWERS--F(rope) = ma(rope) =
T(2) -T(1)
This problem concerns the concept of tension in a rope. Consider a rope subjected
to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An
arbitrary point P divides the rope into a left-hand segment L and a right-hand
segment R.
Which of the following phrases, if they appear in a problem, allow you to assume that
T2=T1 in a horizontally oriented rope? - ANSWERS--The rope is massless.
The rope is moving at constant speed.
Two blocks with masses M1 and M2 hang one under the other. For this problem,
take the positive direction to be upward, and use g for the magnitude of the
acceleration due to gravity.
Find T2, the tension in the lower rope. - ANSWERS--T(2) = M(2)g
