Question

Notify Me Bookmark

Required information An electromagnetic rail gun can fire a projectile using a magnetic field and an electric current. Consider two horizontal conducting rails that are 0.510 m apart with a 46.8 g g conducting projectile that slides along the two rails. A magnetic field of 0.760 T is directed upward. A constant current of 1.90 A passes through the projectile. If the coefficient of kinetic friction between the rails and the projectile is 0.350, how fast is the projectile moving after it has traveled 8.20 m down the rails? m/s

Required information An electromagnetic rail gun can fire a projectile using a magnetic field and an electric current. Consider two horizontal conducting rails that are 0.510 m apart with a 46.8 g g conducting projectile that slides along the two rails. A magnetic field of 0.760 T is directed upward. A constant current of 1.90 A passes through the projectile. If the coefficient of kinetic friction between the rails and the projectile is 0.350, how fast is the projectile moving after it has traveled 8.20 m down the rails? m/s

Image text
! Required information An electromagnetic rail gun can fire a projectile using a magnetic field and an electric current. Consider two horizontal conducting rails that are 0.510 m apart with a 46.8 g g conducting projectile that slides along the two rails. A magnetic field of 0.760 T is directed upward. A constant current of 1.90 A passes through the projectile.
If the coefficient of kinetic friction between the rails and the projectile is 0.350 , how fast is the projectile moving after it has traveled 8.20 m down the rails? m / s

Detailed Answer

0 0

Please enter your email here. You will get email when this question is answered by our tutor.

Doubtrix Logo

Problem is not yet solved!

Click on Notify me to get email when question is answered.

Join Doubtrix with 7-days free trial

  • Icon Correct & Verified Answers
  • Icon No AI-Generated Answers
  • Icon Video Solution for Difficult Questions
  • Icon Work With Experts to Reach at Correct Answers
Notify me Login Sign Up

Similar/Related Questions

As shown in the figure, a straight conductor parallel to the "x" axis can slide without friction on the top of two horizontal conducting rails which are parallel to the "y" axis, and at a distance of L = 0.2 m apart, in a magnetic field of magnitude B = 1.5 T and direction -z. A current I = 20 A flows through the conductor in the direction shown. A string is tied exactly at the center of the conductor, passes over a frictionless pulley, having tied at the other end a mass " m " which is suspended vertically. a) Draw the free body diagram of the conductor b) Calculate the magnetic force vector on the conductor c) If the driver is at rest, calculate the mass m in grams
Solution
0 0

A hanging weight, with a mass of m1 = 0.360 kg, is attached by a string to a block with mass m2 = 0.850 kg as shown in the figure below. The string goes over a pulley with a mass of M = 0.350 kg. The pulley can be modeled as a hollow cylinder with an inner radius of R1 = 0.0200 m, and an outer radius of R2 = 0.0300 m; the mass of the spokes is negligible. As the weight falls, the block slides on the table, and the coefficient of kinetic friction between the block and the table is μk = 0.250. At the instant shown, the block is moving with a velocity of vi = 0.820 m/s toward the pulley. Assume that the pulley is free to spin without friction, that the string does not stretch and does not slip on the pulley, and that the mass of the string is negligible. (a) Using energy methods, find the speed of the block (in m/s ) after it has moved a distance of 0.700 m away from the initial position shown. m/s (b) What is the angular speed of the pulley (in rad/s) after the block has moved this distance? rad/s

Solution
3 0

A metal bar with length L, mass m, and resistance R is placed on frictionless metal rails that are inclined at an angle ϕ above the horizontal. The rails have negligible resistance. A uniform magnetic field of magnitude B is directed downward in the figure (Figure 1). The bar is released from rest and slides down the rails. Figure 1 of 1 Part A Is the direction of the current induced in the bar from a to b or from b to a ? from a to b from b to a Submit Request Answer Part B What is the terminal speed of the bar? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. vt = Submit Request Answer Part C What is the induced current in the bar when the terminal speed has been reached? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. Submit Request Answer Part D After the terminal speed has been reached, at what rate is electrical energy being converted to thermal energy in the resistance of the bar? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. Part E After the terminal speed has been reached, at what rate is work being done on the bar by gravity? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. Submit Request Answer A metal bar with length L, mass m, and resistance R is placed on frictionless metal rails that are inclined at an angle ϕ above the horizontal. The rails have negligible resistance. A uniform magnetic field of magnitude B is directed downward in the figure (Figure 1). The bar is released from rest and slides down the rails. Figure 1 of 1 Part A Is the direction of the current induced in the bar from a to b or from b to a ? from a to b from b to a Submit Request Answer Part B What is the terminal speed of the bar? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. vt = Submit Request Answer Part C What is the induced current in the bar when the terminal speed has been reached? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. Submit Request Answer Part D After the terminal speed has been reached, at what rate is electrical energy being converted to thermal energy in the resistance of the bar? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. Part E After the terminal speed has been reached, at what rate is work being done on the bar by gravity? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. Submit Request Answer A metal bar with length L, mass m, and resistance R is placed on frictionless metal rails that are inclined at an angle ϕ above the horizontal. The rails have negligible resistance. A uniform magnetic field of magnitude B is directed downward in the figure (Figure 1). The bar is released from rest and slides down the rails. Figure 1 of 1 Part A Is the direction of the current induced in the bar from a to b or from b to a ? from a to b from b to a Submit Request Answer Part B What is the terminal speed of the bar? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. vt = Submit Request Answer Part C What is the induced current in the bar when the terminal speed has been reached? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. Submit Request Answer Part D After the terminal speed has been reached, at what rate is electrical energy being converted to thermal energy in the resistance of the bar? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. Part E After the terminal speed has been reached, at what rate is work being done on the bar by gravity? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. Submit Request Answer A metal bar with length L, mass m, and resistance R is placed on frictionless metal rails that are inclined at an angle ϕ above the horizontal. The rails have negligible resistance. A uniform magnetic field of magnitude B is directed downward in the figure (Figure 1). The bar is released from rest and slides down the rails. Figure 1 of 1 Part A Is the direction of the current induced in the bar from a to b or from b to a ? from a to b from b to a Submit Request Answer Part B What is the terminal speed of the bar? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. vt = Submit Request Answer Part C What is the induced current in the bar when the terminal speed has been reached? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. Submit Request Answer Part D After the terminal speed has been reached, at what rate is electrical energy being converted to thermal energy in the resistance of the bar? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. Part E After the terminal speed has been reached, at what rate is work being done on the bar by gravity? Express your answer in terms some or all of of the variables R, m, ϕ, L, B, and acceleration due to gravity g. Submit Request Answer

Solution
0 0