Homework Answers
Weight will act in vertically downward direction and Tension will act in radially inward direction.
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WK-4 A 0.250kg ball is swinging back and forth on the end of a string. a)...
WK-3. Sopheak is swinging a 0.250kg ball back and forth thru the air on a string...
WK-3. Sopheak is swinging a 0.250kg ball back and forth thru the air on a string of length L-0.850m. y (vertical) a) The ball has moved a short distance AS-0.0500m along its circular path as shown in the figure. 1) Draw on the figure the free body diagram for the ball. 30.0° At this position, the force of the air on the ball is 0.350N and the tension in the string is 1.25N. (horizo 2) Calculate the work done on...
Introduction: In this activity a ball is suspended by a piece of string above the floor....
Introduction: In this activity a ball is suspended by a piece of string above the floor. The ball swings back and forth as if it were a pendulum. You wll find a mathematical model which represents the position of the ball with respect to time. We are going to ignore resistance, which would have an impact on the maximum height of the ball over time. I. Collecting the data: One student started the ball swinging back and forth as if...
y (vertical) ) The ball has moved a new short distance AS-0.0500m along its circular ath...
y (vertical) ) The ball has moved a new short distance AS-0.0500m along its circular ath as shown in the figure 1) Draw on the figure the free body diagram for the ball. At this position, the force of the air on the bal is 0.475N and the tension in the string is 3.75N have shown on your figure as the ball moves the distance AS force(s) or write the symbol(s), or write none. (horizor 2) Calculate the work done...
4 and 5 4) The diagrams below show a ball swinging on a string. The diagrams...
4 and 5
4) The diagrams below show a ball swinging on a string. The diagrams show the ball's position at equal time intervals. The first position is when the ball is moving up and left. Copy these into your lab notebook and then draw acceleration vectors for the ball on each one the acceleration points the way you drew it for each diagram. The arrows show the ball's relative speed and direction at each instant and turnaround points have...
a spherical ball hangs on a string on a smooth, frictionless wall.The mass of the ball...
a spherical ball hangs on a string on a smooth, frictionless wall.The mass of the ball is m,its radius is R,and the length of the string is l. Draw a “free-body”diagram with all the forces acting on the ball.Find the normal force between the ball and the wall.Show that N goes to 0 as l goes to infinity. Solve for T and check your answer in this limit as well as in the limit specified in the problem statement.
Two soccer players kick a soccer ball back and forth along a straight line. The first...
Two soccer players kick a soccer ball back and forth along a straight line. The first player kicks the ball 15 m to the right to the second player. The second player kicks the ball to the left weakly; it only moves 3.5 m before stopping. (Consider the right to be the positive direction. Where applicable, indicate the direction with the sign of your answer.) (a) What is the total distance that the ball moved? m (b) At the end,...
A plunger can be moved back and forth in a hollow tube that is L = 150 cm long with two open ends. A stretched wire is placed near the open end, as shown in the figure. The l = 50.0 cm long, 5.0 gram...
A plunger can be moved back and forth in a hollow tube that is L
= 150 cm long with two open ends. A stretched wire is placed near
the open end, as shown in the figure. The l = 50.0 cm long, 5.0
gram wire is fixed at both ends and oscillates in its fundamental
mode. By resonance (meaning that the frequency of the string equals
the frequency of the air column in the tube), the string sets the...
Problem 5 A man is swinging an object, attached to a string, in a circle over...
Problem 5 A man is swinging an object, attached to a string, in a circle over his head (see the sketches). Side view Top view (a) Draw a free-body diagram for the object. Notice the string is not drawn horizontal in the "side view" diagram above. Why is that? (b) If the mass of the object is 1 kg, what is the vertical component of the tension? (c) If the object makes 3 turns per second, and the radius of...
A steel ball is tied to a long piece of string and the other end of...
A steel ball is tied to a long piece of string and the other end of the string is tied to a vertical support forming a pendulum. If the ball (called the pendulum's "bob") is pulled to the side and released, then the ball swings back and forth. What is the direction of the ball's acceleration when it is at the lowest point in its swing? As usual, we ignore the effect of air resistance. in the direction of the...
A 7.50kg box is pushed 1.70m along a frictionless horizontal table top by a constant force...
A 7.50kg box is pushed 1.70m along a frictionless horizontal table top by a constant force directed 25.0° below as shown to the right. a) Draw the free body diagram for the box. Neglect air resistance.b) Find the work done by each force on the box. c) Find the net work done on the box (by all of the Ax 1.70m forces)
WK-3. Sopheak is swinging a 0.250kg ball back and forth thru the air on a string of length L-0.850m. y (vertical) a) The ball has moved a short distance AS-0.0500m along its circular path as shown in the figure. 1) Draw on the figure the free body diagram for the ball. 30.0° At this position, the force of the air on the ball is 0.350N and the tension in the string is 1.25N. (horizo 2) Calculate the work done on...
Introduction: In this activity a ball is suspended by a piece of string above the floor. The ball swings back and forth as if it were a pendulum. You wll find a mathematical model which represents the position of the ball with respect to time. We are going to ignore resistance, which would have an impact on the maximum height of the ball over time. I. Collecting the data: One student started the ball swinging back and forth as if...
y (vertical) ) The ball has moved a new short distance AS-0.0500m along its circular ath as shown in the figure 1) Draw on the figure the free body diagram for the ball. At this position, the force of the air on the bal is 0.475N and the tension in the string is 3.75N have shown on your figure as the ball moves the distance AS force(s) or write the symbol(s), or write none. (horizor 2) Calculate the work done...
4 and 5
4) The diagrams below show a ball swinging on a string. The diagrams show the ball's position at equal time intervals. The first position is when the ball is moving up and left. Copy these into your lab notebook and then draw acceleration vectors for the ball on each one the acceleration points the way you drew it for each diagram. The arrows show the ball's relative speed and direction at each instant and turnaround points have...
A plunger can be moved back and forth in a hollow tube that is L
= 150 cm long with two open ends. A stretched wire is placed near
the open end, as shown in the figure. The l = 50.0 cm long, 5.0
gram wire is fixed at both ends and oscillates in its fundamental
mode. By resonance (meaning that the frequency of the string equals
the frequency of the air column in the tube), the string sets the...
Problem 5 A man is swinging an object, attached to a string, in a circle over his head (see the sketches). Side view Top view (a) Draw a free-body diagram for the object. Notice the string is not drawn horizontal in the "side view" diagram above. Why is that? (b) If the mass of the object is 1 kg, what is the vertical component of the tension? (c) If the object makes 3 turns per second, and the radius of...
A steel ball is tied to a long piece of string and the other end of the string is tied to a vertical support forming a pendulum. If the ball (called the pendulum's "bob") is pulled to the side and released, then the ball swings back and forth. What is the direction of the ball's acceleration when it is at the lowest point in its swing? As usual, we ignore the effect of air resistance. in the direction of the...
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