Each meterstick shown below is free to rotate around its left end. Each meter stick has lines in the picture at 0.25m, 0.5m, 0.75m, and the right end is 1m.
More than one answer is possible.
a. Which cases have a net torque of zero?
b. Which cases have a non-zero change in angular momentum?
Homework Answers
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Each meterstick shown below is free to rotate around its left
end. Each meter stick has...
One end of a meter stick is pinned to a table, so the stick can rotate...
One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the tabletop. Two forces, both parallel to the tabletop, are applied to the stick in such a way that the net torque is zero. The first force has a magnitude of 2.00 N and is applied perpendicular to the length of the stick at the free end. The second force has a magnitude of 6.00 N and acts...
The meterstick shown is 100 cm long. It is free to pivo around its center of...
The meterstick shown is 100 cm long. It is free to pivo around its center of gravity (CG), which is at the 50 cm mark. There is a 20.0 N block hanging from the 80 cm mark Decide where each of the other blocks should be placed one at a time, to balance out the 20.0 N block. At what mark on the meter stick would you place a 19.0 N block to balance the 20.0 N block? mark: At...
One end of a meter stick is pinned to a table, so the stick can rotate...
One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the tabletop. Two forces, both parallel to the tabletop, are applied to the stick in such a way that the net torque is zero. The first force has a magnitude of 2.00 N and is applied perpendicular to the length of the stick at the free end. The second force has a magnitude of 6.00 N and acts...
The meterstick shown is 100 cm long. It is free to pivot around its center of...
The meterstick shown is 100 cm long. It is free to pivot around its center of gravity (CG), which is at the 50 cm mark. There is a 21.0 N block hanging from the 80 cm mark. Decide where each of the other blocks should be placed, one at a time, to balance out the 21.0 N block. 3 2 At what mark on the meter stick would you place a 16.0 N block to balance the 21.0 N block?...
A stick lying at on a frictionless horizontal table is xed in place at one end and free to rotate about that point. Suppose the table and surrounding air constitute a heat bath at temperature T.
A stick lying flat on a frictionless horizontal table is fixed in place at one end and free to rotate about that point. Suppose the table and surrounding air constitute a heat bath at temperature \(T\).(a) Find \(\left\langle\omega^{2}\right\rangle .\) (5 points)(b) The other end of the stick is connected to a spring which provides a restoring torque \((-c \theta),\) where \(c\) is the stiffness and \(\theta\) the angular displacement away from equilibrium. Find \(\left\langle\theta^{2}\right\rangle .\) (5 points)(c) In the stick+spring...
Each of the four bars shown can rotate freely in the horizontal plane about its left end. For which diagrams is the n...
Each of the four bars shown can rotate freely in the horizontal
plane about its left end. For which diagrams is the net torque
equal to zero?
A54.0 meter stick is balanced at its midpoint (50.0 cm, zero point is a left end...
A54.0 meter stick is balanced at its midpoint (50.0 cm, zero point is a left end of stick). Then 2500 welt hung with a light string from the 1967.0 cm point, and a 125 g weight is hung from the 16,0 cm point the figure below). Calculate the clockwise and counterclockwise torques acting on the board due to the four forces shown about the following axes: 50 cm 1) Calculate the clockwise torque if the axis is the 0 cm...
As shown in the figure below, we have a square one meter on a side that is free to rotate about an axis perpendicular to the plane of the square
As shown in the figure below, we have a square one meter on a side that is free to rotate about an axis perpendicular to the plane of the square, a distance a from one side and a distance b from the other side.Two forces, F1 and F2 are applied to diagonally opposite corners, and act along the sides of the square, first as shown in case (t) and then as shown in case (ii) of the drawing. In each...
3. This is the experiment in Chapter 6. Please see the picture below. (For question 3-5.)...
3. This is the experiment in Chapter 6. Please see the picture below. (For question 3-5.) hanging port & X SV This is a weightless meter stick (weight=0. You do not need to the count is as a force.) All the forces are perpendicular to the meter stick. The hang point A is in the middle of the stick. I have set this system in equilibrium state. Hence, we can choose any point as the axis of rotation. If we...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...
One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the tabletop. Two forces, both parallel to the tabletop, are applied to the stick in such a way that the net torque is zero. The first force has a magnitude of 2.00 N and is applied perpendicular to the length of the stick at the free end. The second force has a magnitude of 6.00 N and acts...
The meterstick shown is 100 cm long. It is free to pivo around its center of gravity (CG), which is at the 50 cm mark. There is a 20.0 N block hanging from the 80 cm mark Decide where each of the other blocks should be placed one at a time, to balance out the 20.0 N block. At what mark on the meter stick would you place a 19.0 N block to balance the 20.0 N block? mark: At...
One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the tabletop. Two forces, both parallel to the tabletop, are applied to the stick in such a way that the net torque is zero. The first force has a magnitude of 2.00 N and is applied perpendicular to the length of the stick at the free end. The second force has a magnitude of 6.00 N and acts...
The meterstick shown is 100 cm long. It is free to pivot around its center of gravity (CG), which is at the 50 cm mark. There is a 21.0 N block hanging from the 80 cm mark. Decide where each of the other blocks should be placed, one at a time, to balance out the 21.0 N block. 3 2 At what mark on the meter stick would you place a 16.0 N block to balance the 21.0 N block?...
Each of the four bars shown can rotate freely in the horizontal
plane about its left end. For which diagrams is the net torque
equal to zero?
A54.0 meter stick is balanced at its midpoint (50.0 cm, zero point is a left end of stick). Then 2500 welt hung with a light string from the 1967.0 cm point, and a 125 g weight is hung from the 16,0 cm point the figure below). Calculate the clockwise and counterclockwise torques acting on the board due to the four forces shown about the following axes: 50 cm 1) Calculate the clockwise torque if the axis is the 0 cm...
3. This is the experiment in Chapter 6. Please see the picture below. (For question 3-5.) hanging port & X SV This is a weightless meter stick (weight=0. You do not need to the count is as a force.) All the forces are perpendicular to the meter stick. The hang point A is in the middle of the stick. I have set this system in equilibrium state. Hence, we can choose any point as the axis of rotation. If we...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...
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