![4. [ 17 points] A ball is attached to a horizontal cord of length 110 cm, A peg is located a distance h-80cm directly below t](http://img.homeworklib.com/questions/f00ccd10-8d01-11eb-8d65-3b4db54545db.png?x-oss-process=image/resize,w_560)
Homework Answers
Concept: use work energy principle to find the final speed finding the vertical displacement first in the downward direction
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4. [ 17 points] A ball is attached to a horizontal cord of length 110 cm,...
Conservation problem A ball is attached to a horizontal cord of length L whose other end...
Conservation problem
A ball is attached to a horizontal cord of length L whose other end is fixed (see picture), (a) If the ball is released, what will be its speed at the lowest point of its path? (b) A peg is located a distance h directly below the point of attachment of the cord. If h = 0.7 L, what will be the speed of the ball when it reaches the top of it circular path about the peg?...
A ball is attached to a horizontal cord of length L=1.01 m whose other end is...
A ball is attached to a horizontal cord of length L=1.01 m whose
other end is fixed, as shown.
If the ball is released, what will be its speed at the lowest point
of its path?
Correct, computer gets: 4.45 m/s
B) A peg is located a distance h directly below the point of
attachment of the cord. If h = 0.740L, what will be the speed of
the ball when it reaches the top of its circular path about...
A ball with mass m= 0.98 kg, is attached to a horizontal cord of length l...
A ball with mass m= 0.98 kg, is attached to a horizontal cord of length l = 59 cm whose other end is fixed. A peg is located a distance h = 12 cm directly below the point of attachment of the cord. After the ball is released, what will be the tension (in N) in the cord when it just starts its circular path about the peg?
A ball of mass m-3.50 kg is attached to a horizontal massless cord of length l-...
A ball of mass m-3.50 kg is attached to a horizontal massless cord of length l- 2.00 m, and the other end is fixed, as shown. The ball is released from rest from the highest point, A. Peg a. b. What is the speed of the ball when it reaches its lowest point, B? How much work is done by gravity as the ball moves from point A to point B, its lowest point? c. How much work is done...
2. A small box of mass m is kept on a fixed, smooth sphere of radius...
2. A small box of mass m is kept on a fixed, smooth sphere of radius R at a position where the radius through the box makes an angle of 30° with the vertical. The box is released from the position. (a) What is the force exerted by the sphere on the box just after the release? (b) Find the distance travelled by the box before it leaves contact with the sphere. 3. A particle is suspended from a fixed...
Two objects are moving in the xy-plane. Object A has a mass of 3.2 kg and has a velocity vA = < 2.3 m/s, 4.2 m/s >...
Two objects are moving in the xy-plane. Object A has a mass of 3.2 kg and has a velocity vA = < 2.3 m/s, 4.2 m/s > and object B has a mass of 2.9 kg and has a velocity vB = < -1.8 m/s, 2.7 m/s > . What is the total momentum of the system? A uniform sphere of radius 2R has a spherical cavity of radius R cut out of it. The center of the cavity is...
The ball has a mass m and is attached to the cord of length I. The...
The ball has a mass m and is attached to the cord of length I. The cord is tied at the top to a swivel and the ball is given a velocity. Show that the angle which the cord makes with the vertical as the ball travels around the circular path must satisfy the equation. Neglect air resistance and the size of the ball.
The ball has a mass m and is attached to the cord of length l. The cord is tied at the top to a...
The ball has a mass \(m\) and is attached to the cord of length \(I\). The cord is tied at the top to a swivel and the ball is given a velocity \(\mathbf{v}_{0}\). Show that the angle \(\theta\) which the cord makes with the vertical as the ball travels around the circular path must satisfy the equation tan \(\theta \sin \theta=v_{0}^{2} / g l\). Neglect air resistance and the size of the ball.
A 1-lb all is attached to a 30” long cord as shown. The horizontal cord and...
A 1-lb all is attached to a 30” long cord as shown. The
horizontal cord and ball are released from rest. When the cord
reaches a vertical position, the ball strikes a 5-lb steel block
initially at rest on a frictionless surface. If the coefficient of
restitution between the ball and the block is 0.9, what is the
speed of the ball before and after impact? What is the speed of the
block just after impact?
--- 30 in
A steel ball of mass 0.230 kg is fastened to a cord that is 74.0 cm...
A steel ball of mass 0.230 kg is fastened to a cord that is 74.0 cm long and fixed at the far end. The ball is then released when the cord is horizontal, as shown in the figure. At the bottom of its path, the ball strikes a 2.00 kg steel block initially at rest on a frictionless surface. The collision is elastic. Find (a) the speed of the ball and (b) the speed of the block, both just after the collision.
Conservation problem
A ball is attached to a horizontal cord of length L whose other end is fixed (see picture), (a) If the ball is released, what will be its speed at the lowest point of its path? (b) A peg is located a distance h directly below the point of attachment of the cord. If h = 0.7 L, what will be the speed of the ball when it reaches the top of it circular path about the peg?...
A ball is attached to a horizontal cord of length L=1.01 m whose
other end is fixed, as shown.
If the ball is released, what will be its speed at the lowest point
of its path?
Correct, computer gets: 4.45 m/s
B) A peg is located a distance h directly below the point of
attachment of the cord. If h = 0.740L, what will be the speed of
the ball when it reaches the top of its circular path about...
A ball of mass m-3.50 kg is attached to a horizontal massless cord of length l- 2.00 m, and the other end is fixed, as shown. The ball is released from rest from the highest point, A. Peg a. b. What is the speed of the ball when it reaches its lowest point, B? How much work is done by gravity as the ball moves from point A to point B, its lowest point? c. How much work is done...
2. A small box of mass m is kept on a fixed, smooth sphere of radius R at a position where the radius through the box makes an angle of 30° with the vertical. The box is released from the position. (a) What is the force exerted by the sphere on the box just after the release? (b) Find the distance travelled by the box before it leaves contact with the sphere. 3. A particle is suspended from a fixed...
The ball has a mass m and is attached to the cord of length I. The cord is tied at the top to a swivel and the ball is given a velocity. Show that the angle which the cord makes with the vertical as the ball travels around the circular path must satisfy the equation. Neglect air resistance and the size of the ball.
A 1-lb all is attached to a 30” long cord as shown. The
horizontal cord and ball are released from rest. When the cord
reaches a vertical position, the ball strikes a 5-lb steel block
initially at rest on a frictionless surface. If the coefficient of
restitution between the ball and the block is 0.9, what is the
speed of the ball before and after impact? What is the speed of the
block just after impact?
--- 30 in
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