An object whose mass is unknown is held by two rigid rods. The whole system is at rest. The angle between the vertical direction and the left rod from point A to B is 60 degrees. The angle between the
163,868 results

Physics
An object whose mass is unknown is held by two rigid rods. The whole system is at rest. The angle between the vertical direction and the left rod from point A to B is 60 degrees. The angle between the vertical direction and the right rod from point C to D is 30 degrees. The ... 
physics
Two rigid rods are oriented parallel to each other and to the ground. The rods carry the same current in the same direction. The length of each rod is 0.85 m, and the mass of each is 0.077 kg. One rod is held in place above the ground, while the other floats beneath it at a ... 
Physics
The rigid object shown in Fig. 1063 consists of three balls and three connecting rods, with M = 1.5 kg, L = 0.67 m, and θ = 32°. The balls may be treated as particles, and the connecting rods have negligible mass. Determine the rotational kinetic energy of the object if... 
physics
The ends of the two rods shown in the figure are separated by 2.97 mm at 24.3 °C. The lefthand rod is brass and 1.21 m long; the righthand rod is steel and 1.21 m long. Assuming that the outside ends of both rods rest firmly against rigid supports, at what temperature will ... 
physics
The ends of the two rods shown in the figure are separated by 2.97 mm at 24.3 °C. The lefthand rod is brass and 1.21 m long; the righthand rod is steel and 1.21 m long. Assuming that the outside ends of both rods rest firmly against rigid supports, at what temperature will ... 
physics
The ends of the two rods shown in the figure are separated by 2.97 mm at 24.3 °C. The lefthand rod is brass and 1.21 m long; the righthand rod is steel and 1.21 m long. Assuming that the outside ends of both rods rest firmly against rigid supports, at what temperature will ... 
physics please helpp
The ends of the two rods shown in the figure are separated by 2.97 mm at 24.3 °C. The lefthand rod is brass and 1.21 m long; the righthand rod is steel and 1.21 m long. Assuming that the outside ends of both rods rest firmly against rigid supports, at what temperature will ... 
Physics
Consider the rods plus disc system shown in the Figure. The rod has a length L =0.50 m, and mass M = 0.270kg. The large disc has a radius of R = 0.130m and mass m=0.810kg. The second disk should be treated as a point mass of 0.405kg. It is glued to the rod at position X = 0.... 
physics
Two blocks, each of mass m, are attached to the ends of a massless rod which pivots as shown in Figure 840. Initially the rod is held in the horizontal position and then released. Calculate the magnitude and direction of the net torque on this system. (Express your answer in ... 
College Physics
A uniform rod of mass M = 437.0 g and length L = 37.1 cm stands vertically on a horizontal table. It is released from rest to fall. A)Which of the following forces are acting on the rod? B)Calculate the angular speed of the rod as it makes an angle θ = 45° with respect ... 
physica
Consider the rods plus disc system shown in the Figure. The rods are identical. They have a length L =0.50 m, and mass M = 0.250kg. The disc has a radius of R = 0.130m and mass m=0.750kg. Both rods are glued to the disk as shown with X = 0.25m. The system behaves as a compound... 
Physics
The system shown in the figure is held initially at rest. Calculate the angular acceleration of the system as soon as it is released. You can treat MA (1 kg) and MB (12 kg) as point masses located on either end of the rod of mass MC (27 kg) and length L (9 m). (Indicate the ... 
Physics
Object 1 (mass=5.5 kg) traveling in the +x direction at a speed of 12.40m/s undergoes an inelastic collision with Object 2 (mass=4.80kg) which is at rest. Object two flies off at a speed of 7.80m/s and an angle θ2=32.4 °. It is possible that Object 1 travels back and to ... 
Physics
A 2.5 m rod of mass M= 4. kg is attached to a pivot .8m from the left end so that it can rotate vertically. At the left end of the rod is a small object with mass m=1.5kg. A spring with a spring constant k=90N/m is attached to the right end of the rod. The other end of the ... 
physics
A uniform rod of mass M = 0.245kg and length L = 0.49m stands vertically on a horizontal table. It is released from rest to fall. (a) Calculate the angular speed of the rod, the vertical acceleration of the moving end of the rod, and the normal force exerted by the table on ... 
Physics
The rigid object shown in Fig. 1063 consists of three balls and three connecting rods, with M = 1.5 kg, L = 0.67 m, and θ = 32°. Fig. 1063 The balls may be treated as particles, and the connecting rods have negligible mass. Determine the rotational kinetic energy of ... 
Physics
A mass of 100g is attached to one end of a massless rod, 10cm in length, which is pivoted about the opposite end. The rod is held vertical, with the mass at the top, and released. The rod swings. A. What is the speed of the mass at the instant that the rod is horizontal? B. ... 
Physics
A simple pendulum consists of a light rod of length L = 0.9 m anchored at a fixed point (like the ceiling), and a small mass m = 0.5 kg attached to the free end. The configuration is moved to an angle Î¸ = 39 degrees from the vertical and released from rest. Due to the ... 
Physics URGENT
Object 1 (mass=6.4 kg) traveling in the +x direction at a speed of 14.01m/s undergoes an inelastic collision with Object 2 (mass=5.10kg) which is at rest. Object two flies off at a speed of 11.94m/s and an angle θ2=49.8 °. The diagram below is just a sketch and is not ... 
math
A conducting rod of mass 30 g and length 48 cm has holes drilled near each end so that it is free to slide in a vertical direction along two conducting rails as shown in the figure below. A current of 240 A is made to flow through an identical rod at the bottom of the assembly... 
Physics
An object is formed by attaching a uniform, thin rod with a mass of mr = 6.54 kg and length L = 5.12 m to a uniform sphere with mass ms = 32.7 kg and radius R = 1.28 m. Note ms = 5mr and L = 4R. 1)What is the moment of inertia of the object about an axis at the left end of the... 
physics
three uniform thin rods, each of length L = 16 cm, form an inverted U. The vertical rods each have mass of 14 g; the horizontal rod has mass of 50 g. Where is the center of mass of the assembly (x, y)? 
physics
Three uniform thin rods, each of length L = 16 cm, form an inverted U. The vertical rods each have mass of 14 g; the horizontal rod has mass of 50 g. Where is the center of mass of the assembly (x, y)? 
Physics
Three uniform thin rods, each of length L = 16 cm, form an inverted U. The vertical rods each have mass of 14 g; the horizontal rod has mass of 50 g. Where is the center of mass of the assembly (x, y)? 
Physics
A point charge of charge 1 mC and mass 100 g is attached to a nonconducting massless rod of length 10 cm. The other end of the rod is attached to a twodimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel to the yz plane (... 
Physics
A point charge of charge 1 mC and mass 100 g is attached to a nonconducting massless rod of length 10 cm. The other end of the rod is attached to a twodimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel to the yz plane (... 
Physics
There is a horizontal rod of length L and mass M. A point mass m is vertically above the rod at a vertical distance L/4 and horizontal distance L/3 from one end of the rod.Using The Riemann sum Integral,find the magnitude and direction of the gravitational force exerted on the... 
Math
There is a horizontal rod of length L and mass M. A point mass m is vertically above the rod at a vertical distance L/4 and horizontal distance L/3 from one end of the rod.Using The Riemann sum Integral,find the magnitude and direction of the gravitational force exerted on the... 
physics
An object is formed by attaching a uniform, thin rod with a mass of mr = 6.54 kg and length L = 5.12 m to a uniform sphere with mass ms = 32.7 kg and radius R = 1.28 m. Note ms = 5mr and L = 4R. 1)What is the moment of inertia of the object about an axis at the left end of the... 
physics
1. Consider a rod of mass 1g and length L, held in place against a vertical wall by a cable at the opposite end as shown in the diagram. A sign of mass 10kg is also hanging o the end of the rod furthest from the wall. The angles marked are =30 and =45 . (a)Find the ... 
Pyhsic...Elena,please help....
A point charge of charge 1 mC and mass 100 g is attached to a nonconducting massless rod of length 10 cm. The other end of the rod is attached to a twodimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel to the yz plane (... 
Physics
One end of a uniform 3.20mlong rod of weight Fg is supported by a cable at an angle of θ = 37° with the rod. The other end rests against the wall, where it is held by friction as shown in the figure below. The coefficient of static friction between the wall and the rod... 
physics
A uniform thin rod of length 0.55 m and mass 5.5 kg can rotate in a horizontal plane about a vertical axis through its center. The rod is a rest when a 3.0g bullet traveling in the horizontal plane of the rod is fired into one end of the rod. As viewed from above, the ... 
AP Physics
A uniform thin rod of length 0.3m and mass 3.5kg can rotate in a horizontal plane about a vertical axis through its center. The rod is at rest when a 3g bullet traveling in the horizontal plane of the rod is fired into one end of the rod. As viewed from above, the direction of... 
Physics
The sketch shows a mobile in equilibrium. Each of the rods is 0.16 m long, and each hangs from a supporting string that is attached one fourth of the way across it. The mass of each rod is 0.10 kg. The mass of the strings connecting the blocks to the rods is negligible. What ... 
Physics Please Help
A point charge of charge 1 mC and mass 100 g is attached to a nonconducting massless rod of length 10 cm. The other end of the rod is attached to a twodimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel to the yz plane (... 
Physics
A rigid rod of mass 0.2 kg and length 1.5 m is suspended by wires at each end. The wireshave equal rest length. The wire on the left end of the rod has Young’s modulus4*10^11Pa, while the one on the right end has Young’s modulus2*10^11Pa. A 2 kg mass is hung fromthe beam. ... 
physics
two small objects of masses 'm' & '2m' each are attaached to the ends of a light rigid rod of length 'L' . the rod is pivoted at a point where centre of mass of the two objects lie. the moment of inertia of the arrangement about an axis through the centre of mass , ... 
Dynamics of Rigid Bodies
The system of blocks A and B and two pulleys C and D is assembled as shown in the figure. Neglecting friction in and the mass of the pulleys, and assuming that the whole system is initially at rest, determine the acceleration of block A. The coefficient of kinetic friction ... 
Physics
A small rock with mass m moves at velocity v0 and hits a rod of mass M as shown. The rod is initially at rest. The collision is completely inelastic. a) What is the angular velocity of the rod after the collision? b) What is the maximum angle the rod makes with the vertical? 
physics
Question Part Points Submissions Used A thin cylindrical rod of length 3.00 m and mass 1.5 kg has two spheres attached on its ends. The centers of the spheres are 1.50 m from the center of the rod. The mass of each sphere is M = 0.72 kg. The rod and spheres are initially at ... 
Physics
Two blocks, each of mass,m, are attached to the ends of a massless rod which pivots as shown in Fig. 840. Initially the rod is held in the horizontal position and then released. Calculate the magnitude and direction of the net torque on this system. This is what I got: Can ... 
Physics
Consider a rod plus disc system. The rod has a total length L =1.30 m, while the disc has a radius of R = L/2. The pivot is at P where the distance between P and the end of the rod is L/4. Point O is at the center of the disc, and the distance between O and P is 0.975 m. The ... 
Physics with Calculus
The system shown in the figure is in static equilibrium. The rod of length L and mass M is held in an unpright position. The top of the rod is tied to a fixed vertical surface by a string, and a force F is applied at the midpoint of the rod. The coefficient of static friction ... 
Physics
Consider the figure above consisting of three particles of mass m attached to a massless rod. Given an axis of rotation through point P, the rod rotates as shown in the figure. If the rod is released from rest in the horizontal position at t = 0. What is the angular ... 
Physics Classical Mechanics
A rod is lying at rest on a perfectly smooth horizontal surface (no friction). We give rod a short impulse (a hit) perpendicular to the length direction of the rod at X. The mass of the rod is 3 kg, and its length is 50 cm. The impulse is 4 kg⋅m/sec. The distance from ... 
college student
Two spheres of mass 2 kg and 3 kg are attached to the ends of a light rigid rod of length 1.0 m. What is the moment of inertia of the system about an axis perpendicular to the rod and (i) passes through the centre of the rod (ii) passes through the 2 kg sphere 
Physics
A pendulum is constructed of a mass m connected to a mass ess rigid rod of lengthl. As shownin the figure, the other end of the rodis suspended from a point on the ring ofradius R. The pendulum is free to swing in a vertical plane that is also the plane of the ring. The ring ... 
Physics
A pendulum is constructed of a mass m connected to a mass ess rigid rod of lengthl. As shownin the figure, the other end of the rodis suspended from a point on the ring ofradius R. The pendulum is free to swing in a vertical plane that is also the plane of the ring. The ring ... 
Phys
A pendulum is constructed of a mass m connected to a mass ess rigid rod of lengthl. As shownin the figure, the other end of the rodis suspended from a point on the ring ofradius R. The pendulum is free to swing in a vertical plane that is also the plane of the ring. The ring ... 
Physics
A pendulum is constructed of a mass m connected to a mass ess rigid rod of lengthl. As shownin the figure, the other end of the rodis suspended from a point on the ring ofradius R. The pendulum is free to swing in a vertical plane that is also the plane of the ring. The ring ... 
Physics
Consider the figure above, where a rigid beam of negligible mass and 10 m long is supported by a cable attached to a spring. When NO block is hung from the beam, the length L (cablespring) is equal to 5 m. Assume that immediately after block (weight of 280 N) is hung at the ... 
physics
I am studying for a physics exam and this is the pretest. There are some that I don't understand. If someone could help me get to the answer (show all the work so I can look it all over) that would be AMAZING! Thank you very much! 2. A roller coaster, loaded with passengers, ... 
Physics
Suppose you’re building a contraption which contains a solid rod of length L = 12.5 m and mass 4.9 kg. This rod has its lower end barely above the ground at an angle of 20.6 degrees with respect to the horizontal, and is ultimately held up by a rope connected at a distance L... 
Physics
A uniform rod AB of length 2a and mass M is freely pivoted at A and is held with B vertically above A. It is then allowed to fall and when B is vertically below A it strikes a stationary particle , also of mass M,which sticks to the rod at B. The rod then turns through a ... 
mechanics
The figure below shows a ball with mass m = 0.299 kg attached to the end of a thin rod with length L = 0.388 m and negligible mass. The other end of the rod is pivoted so that the ball can move in a vertical circle. The rod is held horizontally as shown and then given enough ... 
Physics
Consider the figure above consisting of three particles of mass m attached to a massless rod. Given an axis of rotation through point P, the rod rotates as shown in the figure. If the rod is released from rest in the horizontal position at t = 0. What is the angular ... 
Physics
There is a sign hanging off of a building. The sign itself is hung at the far end of a rod. The rod is held up by both a pivot on the building's wall, and a vertical cable attached 1 m away from the building to the rod. The cable and the rod make a right angle. The rod has ... 
physics
A thin, rigid, uniform rod has a mass of 2.60 kg and a length of 1.69 m. (a) Find the moment of inertia of the rod relative to an axis that is perpendicular to the rod at one end.A thin, rigid, uniform rod has a mass of 2.60 kg and a length of 1.69 m. 
physical science
A builder pushes a wheelbarrow loaded with sand ,from rest at point A,up a ramp of unknown length ,which is inclined at unknown angle ,vertical height of unknown 2,75m 
physics mechanics
A light, rigid rod with two masses attached to its ends, one of mass 3M and one of mass M, is pivoted about a horizontal axis. The mass 3M is length L from the pivot point and the mass M is length 2L from the pivot point. When released from a horizontal orientation, the rod ... 
physics
A rigid rod holds a restaurant sign horizontally from the side of a building. The force due to gravity acting on the sign is 165N with the angle between the sign and the rod being 50 degrees. Ignoring the weight of the rod what is the magnitude of the tension in the rod? 
Advanced Dynamics and Relativity
A point mass m is connected by a massless rod of length L to a ﬁxed point of support, such that the mass is free to rotate about the support in any direction under the inﬂuence of gravity. (a) Construct a Lagrangian in terms of suitable generalised coordinates, ... 
physics
A 3.0kg object moving 8.0 m/s in the positive x direction has a onedimensional elastic collision with an object (mass = M) initially at rest. After the collision the object of unknown mass has a velocity of 6.0 m/s in the positive x direction. What is M? 
Physics
Two 8 cm long thin glass rods uniformly charged to +10 nC are placed side by side, 4.0 cm apart. What are the electric field strengths E1 to E3 at distances 1.0 cm, 2.0 cm, and 3.0 cm to the right of the rod on the left along the line connecting the midpoints of the two rods? 
Physics
An object consists of 5 masses, each of mass m, connected by massless rods. The two short rods have length L and the two long rods have length 2L. What is the moment of inertia about an axis perpendicular to the diagram (out of the page) and through the mass labeled x (the ... 
Science
a 51.0 kg uniform square sign, of edge L = 2.00 m, is hung from a horizontal rod of length dh = 3.00 m and negligible mass. A cable is attached to the end of the rod and to a point on the wall at distance dv = 4.00 m above the point where the rod is hinged to the wall. (a) ... 
Physics
An object of mass 1.00 kg is attached to a vertical spring with spring constant 100 N/m. The object is held at rest in a position such that the spring is stretched upward a distance 1.00 cm beyond its undisturbed length. If the object is released, how far will it drop before ... 
Physics
Two small charges with a mass of 1.0 g each are connected by 2.0cmlong insulating rod of negligible mass. Each ball has the same magnitude of charge of 10 nC, but with opposite sign. The rod is held in a 1.0 × 104 N/C uniform electric field at the angle of 30°, then ... 
Physics
The drawing shows two identical systems of objects; each consists of the same three small balls connected by massless rods. In both systems the axis is perpendicular to the page, but it is located at a different place, as shown. The same force of magnitude F is applied to the ... 
physics
a force of 200 N is exerted at an angle 30 degrees with respect to the horizontal on an object whose mass is 30kg. the coefficient of friction between the object and the surface is the 0.2.(a)what is the frictional force?(B) what is the acceleration of the object?(c) if the ... 
physics
Calculate the angular speed of the rod, the vertical acceleration of the moving end of the rod, and the normal force exerted by the table on the rod as it makes an angle θ = 49.6° with respect to the vertical. b) If the rod falls onto the table without slipping, find the... 
math
Uniform rod AB with end B resting against rough vertical wall. Coefficient of friction between wall and rod is μ. Rod is 2m long and has mass 3kg. Rod is kept in limiting equilibrium by a light inextensible string, one end of which is attached to the end A of the rod and ... 
physics
There is a sign hanging off of a building. The sign itself is hung at the far end of a rod. The rod is held up by both a pivot on the building's wall, and a vertical cable attached 1 m away from the building to the rod. The cable and the rod make a right angle. The rod has ... 
Physics
A thin rod, of length L and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass m is attached to the other end. The rod is pulled aside through an angle and released. What is the speed of the ball at the lowest point if L = 2.20 m... 
Physics 203
A 2.4 m long rod of mass m1 = 11.0 kg, is supported on a knife edge at its midpoint. A ball of clay of mass m2 = 5 kg is dropped from rest from a height of h = 1.1 m and makes a perfectly inelastic collision with the rod 0.9 m from the point of support. Find the angular ... 
Physics
A uniform rod pivoted at one end (point O) is free to swing in a vertical plane in a grav itational field, held in equilibrium by a force F at its other end. The rod of length 7 m and weight 4.7 N makes an angle 39◦ with the hor izontal and the force an angle of 54&#... 
physics
A stairwell is supported by two circular steel rods at one end. The other end supported above. The two steel rods are subjected to a total load of 12,800lbs. The rods are 24 ft long and E=30*10^6 psi. Select the rod based on the following specs. The rod deformation should not ... 
physics
A stairwell is supported by two circular steel rods at one end. The other end supported above. The two steel rods are subjected to a total load of 12,800lbs. The rods are 24 ft long and E=30*10^6 psi. Select the rod based on the following specs. The rod deformation should not ... 
physics
A stairwell is supported by two circular steel rods at one end. The other end supported above. The two steel rods are subjected to a total load of 12,800lbs. The rods are 24 ft long and E=30*10^6 psi. Select the rod based on the following specs. The rod deformation should not ... 
physics
A stairwell is supported by two circular steel rods at one end. The other end supported above. The two steel rods are subjected to a total load of 12,800lbs. The rods are 24 ft long and E=30*10^6 psi. Select the rod based on the following specs. The rod deformation should not ... 
Physics
Toy 1, which has a mass of 2 kg, is moving to the right at 3 m/s, and Toy 2, whose mass is unknown, is moving to the left at 3 m/s. After the two toys collide, each object's speed is 3 m/s. What could be Toy 2's mass (choose 2 answers)? A. 1 kg B. 3 kg C. 2 kg D. Negligible mass 
AP PHYSICS MECH.
A simple pendulum, consists of an object suspended by a string. The object is assumed to be a particle. The string, with its top end fixed, has negligible mass and does not stretch. In the absence of air friction, the system oscillates by swinging back and forth in a vertical ... 
physics
Two small balls are attached to a rigid rod of mass 2.2 kg that is 6.0 m in length. The first ball has a mass of 2.25 kg and the second ball has a mass of 4.95 kg. (c) What is the moment of inertia of the rod when it spins around its center of mass? 
physics
A T is made of two identical 740 g thin solid rods. The moment of inertia of the T about an axis perpendicular to the screen through point at one end of a rod is determined experimentally to be 0.68 kgm2. What is the length of the rods? 
Physics
A 2.285 kg object is held in place on an inclined plane that makes an angle of 40 degrees with the horizontal. The coefficient of static friction between the plan and the object is 0.552. A second object that has a mass of 4.75 kg is connected to the first object with a ... 
physics
a certain mass leaves the origin traveling in an unknown direction with an unknown speed. The mass is subject to a constant acceleration of 12i m/s2. It later passes the y axis at the point (0,50). What was the initial speed and the intitial direction? The angle is 26 degrees. 
PHYSÝCS I
A block of mass m1 = 21.3 kg is at rest on a plane inclined by θ = 30.00 degrees. It is connected via a rope and pulley system to another mass m2 = 24.5 kg, as shown. The coefficients of static and kinetic friction between block 1 and the inclined plane are μs = 0.... 
physics
A block of mass m1 = 21.3 kg is at rest on a plane inclined by θ = 30.00 degrees. It is connected via a rope and pulley system to another mass m2 = 24.5 kg, as shown. The coefficients of static and kinetic friction between block 1 and the inclined plane are μs = 0.... 
Physics
A mass of 1.0 kg is located at the end of a very light and rigid rod 44 cm in length. The rod is rotating about an axis at its opposite end with a rotational velocity of 3 rad/s. (a) What is the rotational inertia of the system? kg · m2 (b) What is the angular momentum of the... 
PHYSICS
Two parallel METAL rods form a plane inclined at 20.0° to the horizontal. The upper end of the rods are connected together by a resistor of 118.0 Ω. The lower end of the rods are held in an ELECTRICALLY INSULATING block. They are separated horizontally by a distance of ... 
Physics
A 1.34‒kg ball is attached to a rigid vertical rod by means of two massless strings each 1.70 m long. The strings are attached to the rod at points 1.70 m apart. The system is rotating about the axis of the rod, both strings being taut and forming an equilateral triangle... 
physics
A 4.00 kg mass and a 3.00 kg mass are attached to opposite ends of a thin 32.2 cm long horizontal rod. The system is rotating at angular speed omega = 4.70 rad/s about a vertical axle at the center of the rod. Determine the kinetic energy K of the system. 
physics
Two 2.3 kg balls are attached to the ends of a thin rod of negligible mass, 65 cm in length. The rod is free to rotate in a vertical plane about a horizontal axis through its center. With the rod initially horizontal as shown, a 44 gm wad of wet putty drops onto one of the ... 
Physics 1
A mass of 8 kg lies on a horizontal, frictionless floor. A force of 53 Newtons pushes to the left (negative x direction) with a force of 53 Newtons. Another force of unknown magnitude pushes the mass in a direction of 28.5 degrees above the positive x axis. The mass is ... 
Physics
A mass of 8 kg lies on a horizontal, frictionless floor. A force of 72 Newtons pushes to the left (negative x direction) with a force of 72 Newtons. Another force of unknown magnitude pushes the mass in a direction of 21.4 degrees above the positive x axis. The mass is ... 
Physics
Two masses m are attached to two vertices of an equilateral triangle made of three massless rods of length l. A pivot is located at the third vertex, and the triangle is free to swing back and forth in a vertical plane. If it is initially released from rest when one of the ... 
physics
Jahna and Raul move onto the setup for experiment 2. They have been asked to determine both the mass of the rod and the mass of the hanging object. They know the length of the rod, the position of the hanging mass, anf the positions and readings of the scales. Determine the ... 
Physic
Three balls are attached to a light rigid rod, as shown in the figure. A fulcrum is located at xf = 18.0 cm measured from the left end of the rod. Ball A has mass mA = 65 g and is located at xA = 3 cm. Ball B has mass mB = 12 g located at xB = 22 cm. Ball C has mass mC = 22 g ... 
physics
A ring of mass m slides on a smooth vertical rod. A light string is attached to the ring and is passing over a smooth peg distant a from the rod, and at the other end of the string is a mass The ring is held on a level with the peg and released. It first comes to rest after ...