![PROBLEM III: (20pts) U m A point mass m is attached to a string, which passes through a hole in a table. Mass m,0.2 kg rotates in a circle of radius r-0.8 m with an angular velocity of 40 rad/s. a) What mass m must be attached to the end of the string the under the table to maintain this motion? b) Suppose that mass m is slowly increased by an amount that makes it descend a distance 0.1 m. What is the amount of the increase of m? n2 c) What will the new angular velocity of the point mass be? [Hint: Use conservation of angular momentum] ESSEIN-HC-PHYS.110SP2018-EXAM U-V CH](http://img.homeworklib.com/questions/a4a534d0-330d-11eb-9f3e-4f56f7ddd013.png?x-oss-process=image/resize,w_560)
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PROBLEM III: (20pts) U m A point mass m is attached to a string, which passes...
A puck on a horizontal, frictionless surface is attached to a string that passes through a...
A puck on a horizontal, frictionless surface is attached to a
string that passes through a hole in the surface, as shown in the
figure(Figure 1). As the puck rotates about the hole, the string is
pulled downward, bringing the puck closer to the hole.
a.) During this process, the puck's linear
speed increases because _____. Explain.
b.) During this process, the puck's angular
speed increases because _____. Explain.
c.) During this process, the puck's angular
momentum remains the same...
One end of a string is attached to a 4 kg mass undergoing velocity v1 =...
One end of a string is attached to a 4 kg mass undergoing
velocity v1 = 5 m/s at a radius of
r1 = 500 mm on a frictionless
table. The other end of the string passes through a hole
in the table. Find the velocity v2
of the mass if the string is slowly (assume vr
~ 0) pulled through the hole until its radius is
r2 = 200 mm.
3 ms 500 mm
A mass of 0.875 kg, on a frictionless table, is attached to a string which passes...
A mass of 0.875 kg, on a frictionless table, is attached to a string which passes through a hole in the table. The hole is at the center of a horizontal circle in which the mass moves with constant speed. The radius of the circle is 0.520 m and the speed of the mass is 17.0 m/s. It is found that drawing the string down through the hole and reducing the radius of the circle to 0.370 m has the...
4. A ball of mass m is on a frictionless table. A string is attached to...
4. A ball of mass m is on a frictionless table. A string is attached to the ball goes through a hole as shown. A mass M is hung from the string. M If the ball is originally a distance l from the hole, what angular velocity must it be given to the mass m so that the mass M will remain at rest? If the mass M is pulled down so that the ball goes in a circle of...
A small mass m attached to the end of a string revolves in a circle on...
A small mass m attached to the end of a string revolves in a circle on a frictionless tabletop. The other end of the string passes through a hole in the table (Fig. 8-62). Initially, the mass revolves with a speed vi = 2.4 m/s in a circle of radius ri =0.80 m. The string is then pulled slowly through the hole so that the radius is reduced to r2 0.48 m. What is the speed, 2, of the m...
Object rotating on a string of changing length. A small mass m attached to the end...
Object rotating on a string of changing length. A small mass m attached to the end of a string revolves in a circle on a friction-less tabletop. The other end of the string passes through a hole in the table. Initially the mass revolves with a speed 2.4 m/s in a circle of radius 0.80 m. The string is then pulled slowly through the hole so that the radius i reduced to 0.48 m. The final speed is 4.0 m/s...
A small mass M attached to a string slides in a circle (x) on a frictionless...
A small mass M attached to a string slides in a circle (x) on a
frictionless horizontal table, with the force F
providing the necessary tension (see figure). The force is then
increased slowly and then maintained constant when M travels around
in circle (y). The radius of circle (x) is twice the radius of
circle (y).
Answer can be true,false,less than, greater than, equal to
(if you could leave an explanation that would be great!)
M's angular velocity at...
A small mass M attached to a string slides in a circle (x) on a frictionless...
A small mass M attached to a string slides in a circle (x) on a frictionless horizontal table, with the force F providing the necessary tension (see figure). The force is then increased slowly and then maintained constant when M travels around in circle (y). The radius of circle (x) is twice the radius of circle (y) X M's angular momentum at y is .... that at x M's angular velocity at y is four times that at x M's...
A mass of .775kg, on a frictionless table, is attached to a strong which passes though...
A mass of .775kg, on a frictionless table, is attached to a strong which passes though a hole in the table. The hole is at the center of a horizontal circle in which the mass moves with constant speed. The radius of the circle is .57 m and the speed of the mass is 15 m/s. It is found that drawing the string down through the hole and reducing the radius of the circle to .33m has the effect of...
1. Five objects of mass m move at velocity V at a distance r from an...
1. Five objects of mass m move at velocity V at a distance r from an axis of rotation perpendicular axis for each to the page through point A, as shown below. Calculate the angular momentum L about that case (L is positive if it is out of the page) a. A. d. A. e. 2. A puck on a frictionless air hockey table has a mass of 5.0 g and is attached to a cord passing througha hole in...
A puck on a horizontal, frictionless surface is attached to a
string that passes through a hole in the surface, as shown in the
figure(Figure 1). As the puck rotates about the hole, the string is
pulled downward, bringing the puck closer to the hole.
a.) During this process, the puck's linear
speed increases because _____. Explain.
b.) During this process, the puck's angular
speed increases because _____. Explain.
c.) During this process, the puck's angular
momentum remains the same...
One end of a string is attached to a 4 kg mass undergoing
velocity v1 = 5 m/s at a radius of
r1 = 500 mm on a frictionless
table. The other end of the string passes through a hole
in the table. Find the velocity v2
of the mass if the string is slowly (assume vr
~ 0) pulled through the hole until its radius is
r2 = 200 mm.
3 ms 500 mm
4. A ball of mass m is on a frictionless table. A string is attached to the ball goes through a hole as shown. A mass M is hung from the string. M If the ball is originally a distance l from the hole, what angular velocity must it be given to the mass m so that the mass M will remain at rest? If the mass M is pulled down so that the ball goes in a circle of...
A small mass m attached to the end of a string revolves in a circle on a frictionless tabletop. The other end of the string passes through a hole in the table (Fig. 8-62). Initially, the mass revolves with a speed vi = 2.4 m/s in a circle of radius ri =0.80 m. The string is then pulled slowly through the hole so that the radius is reduced to r2 0.48 m. What is the speed, 2, of the m...
A small mass M attached to a string slides in a circle (x) on a
frictionless horizontal table, with the force F
providing the necessary tension (see figure). The force is then
increased slowly and then maintained constant when M travels around
in circle (y). The radius of circle (x) is twice the radius of
circle (y).
Answer can be true,false,less than, greater than, equal to
(if you could leave an explanation that would be great!)
M's angular velocity at...
A small mass M attached to a string slides in a circle (x) on a frictionless horizontal table, with the force F providing the necessary tension (see figure). The force is then increased slowly and then maintained constant when M travels around in circle (y). The radius of circle (x) is twice the radius of circle (y) X M's angular momentum at y is .... that at x M's angular velocity at y is four times that at x M's...
1. Five objects of mass m move at velocity V at a distance r from an axis of rotation perpendicular axis for each to the page through point A, as shown below. Calculate the angular momentum L about that case (L is positive if it is out of the page) a. A. d. A. e. 2. A puck on a frictionless air hockey table has a mass of 5.0 g and is attached to a cord passing througha hole in...
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