Homework Answers
Questions 1&2 FP 1. A sliding block of mass m 0.25 kg is subject to a...
Questions 1&2
FP 1. A sliding block of mass m 0.25 kg is subject to a force of magnitude 4 N that makes an angle of ф-30 with the horizontal surface. If the coefficient of kinetic friction between block and surface is 0.5, what is the resulting acceleration of the block along the surface Figure 1: Block on incline. 2. A block of mass m - 5 kg is subject to a force of magnitude 20 N that makes an...
A horizontal force, F1=55 N, and a force, F2 = 17.6 N acting at an angle of θ with respect to the x-axis, as shown, are applied to a block of mass m=2.4 kg.
A horizontal force, F1=55 N, and a force, F2 = 17.6 N acting at an angle of θ with respect to the x-axis, as shown, are applied to a block of mass m=2.4 kg. The coefficient of kinetic friction between the block and the surface is μk = 0.2. The block is moving to the right.Part (a) Solve numerically for the magnitude of the normal force, FN in newtons, that acts on the block if θ = 30°. Part (b) Solve...
1. A block of mass m = 5.0 kg is pulled along a horizontal floor or...
1. A block of mass m = 5.0 kg is pulled along a horizontal floor or up the ramp by a force of magnitude F = 50 N. The coefficient of kinetic friction between the block and surface is 0.15 and the magnitude of the angle θ = 25.0°. (a) Make a free-body diagram of the block for each case. (b) Calculate the magnitude of the normal force and kinetic friction force for each case. (c) Calculate the acceleration of...
Blocks/Force question
A block of mass m1 on a rough, horizontalsurface is connected to a ball of mass m2 by alightweight cord over a lightweight,frictionless pulley, as shownin Figure 5.21a. A force of magnitude F at an angle ofθ with the horizontal is applied to the block asshown. Thecoefficient of kinetic friction between the block andthe surface is µk.Figure 5.21aThe external force F applied as shown can causethe block to accelerate to the right.Consider the system described in the example withm1 =...
An object with a mass of 5 kg lies is on a horizontal surface with a...
An object with a mass of 5 kg lies is on a horizontal surface with a coefficient of kinetic friction of 0.75. A force of 30 Nis applied to it DOWNWARDS, perpendicular to the surface, a force of 40 N is applied to it at an angle of 30 degrees above the +x axis, and a force of 20 N is applied to it in the negative x direction. The mass moves 10 m in the positive x direction with...
Problem#5: A box with mass 12,0 kg moves on a ramp that is inclined at an...
Problem#5: A box with mass 12,0 kg moves on a ramp that is inclined at an angle of 60.0 above the horizontal. The coefficient of kinetic friction between the box and the ramp surface is M = 0.380. a) Draw a free body diagram b) Express all required equations c) Calculate the magnitude of the acceleration of the box if you push on the box with a constant 150.0 N that is parallel to the ramp surface and directed down...
Two crates, of mass m1= 50 kg and m2= 100 kg, are in contact and at...
Two crates, of mass m1= 50 kg and m2= 100 kg, are in contact and at rest on a horizontal surface. Force F= 600 N is exerted on the 50-kg crate. The coefficient of kinetic friction is 0.20. A) determine the acceleration of the system. B) determine the magnitude of the force that each crate exerts on the other.
A horizontal force of 80 N acts on a mass of 6 kg resting on a horizontal surface, as shown in Figure 5. The mass is initially at rest and covers a distance of 5 m in 0.92 s under the action of the f...
A horizontal force of 80 N acts on a mass of 6 kg resting on a horizontal surface, as shown in Figure 5. The mass is initially at rest and covers a distance of 5 m in 0.92 s under the action of the force. Assuming there are no energy losses due to air resistance and therefore that the acceleration is constant (a) (b) (c) (d) Calculate the total energy expended in the acceleration. Plot a graph of the kinetic...
19) A brick on an inclined plane with an angle of 30° to the horizontal has...
19) A brick on an inclined plane with an angle of 30° to the horizontal has a mass of 3 kg. A horizontal force F with a magnitude of 50 N is applied to the brick, such that a component of that force pushes the brick up the plane. The coefficient of kinetic friction between the brick and the inclined plane is 0.15 М 30 30° a) Use Newton's 2nd law to determine the magnitude of the normal force on...
An object with a mass m = 4.00 kg is attached to the end of a...
An object with a mass m = 4.00 kg is attached to the end of a spring, and the spring is stretched an amount x; = 4.60 cm and then released. If the force constant for the spring is k = 520 N/m, determine the speed of the mass as it passes through the equilibrium position the first time for the following two cases. (a) The horizontal surface the object is sliding along is frictionless. m/s (b) The coefficient of...
Questions 1&2
FP 1. A sliding block of mass m 0.25 kg is subject to a force of magnitude 4 N that makes an angle of ф-30 with the horizontal surface. If the coefficient of kinetic friction between block and surface is 0.5, what is the resulting acceleration of the block along the surface Figure 1: Block on incline. 2. A block of mass m - 5 kg is subject to a force of magnitude 20 N that makes an...
A block of mass m1 on a rough, horizontalsurface is connected to a ball of mass m2 by alightweight cord over a lightweight,frictionless pulley, as shownin Figure 5.21a. A force of magnitude F at an angle ofθ with the horizontal is applied to the block asshown. Thecoefficient of kinetic friction between the block andthe surface is µk.Figure 5.21aThe external force F applied as shown can causethe block to accelerate to the right.Consider the system described in the example withm1 =...
An object with a mass of 5 kg lies is on a horizontal surface with a coefficient of kinetic friction of 0.75. A force of 30 Nis applied to it DOWNWARDS, perpendicular to the surface, a force of 40 N is applied to it at an angle of 30 degrees above the +x axis, and a force of 20 N is applied to it in the negative x direction. The mass moves 10 m in the positive x direction with...
Problem#5: A box with mass 12,0 kg moves on a ramp that is inclined at an angle of 60.0 above the horizontal. The coefficient of kinetic friction between the box and the ramp surface is M = 0.380. a) Draw a free body diagram b) Express all required equations c) Calculate the magnitude of the acceleration of the box if you push on the box with a constant 150.0 N that is parallel to the ramp surface and directed down...
A horizontal force of 80 N acts on a mass of 6 kg resting on a horizontal surface, as shown in Figure 5. The mass is initially at rest and covers a distance of 5 m in 0.92 s under the action of the force. Assuming there are no energy losses due to air resistance and therefore that the acceleration is constant (a) (b) (c) (d) Calculate the total energy expended in the acceleration. Plot a graph of the kinetic...
19) A brick on an inclined plane with an angle of 30° to the horizontal has a mass of 3 kg. A horizontal force F with a magnitude of 50 N is applied to the brick, such that a component of that force pushes the brick up the plane. The coefficient of kinetic friction between the brick and the inclined plane is 0.15 М 30 30° a) Use Newton's 2nd law to determine the magnitude of the normal force on...
An object with a mass m = 4.00 kg is attached to the end of a spring, and the spring is stretched an amount x; = 4.60 cm and then released. If the force constant for the spring is k = 520 N/m, determine the speed of the mass as it passes through the equilibrium position the first time for the following two cases. (a) The horizontal surface the object is sliding along is frictionless. m/s (b) The coefficient of...
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