2A. Blocks A and B are connected by a cable that passes over a frictionless pulley as shown. If the weight of A is 100 N and the incline plane is smooth, (a) Draw the FBD of each block (b) what should be the mass of B to keep them at rest? (c) Find the magnitude and direction of the force exerted by the incline on the block. 30
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Q: B B A A C W A weight of 233 N is suspended by three ropes, A, B, and C as shown. The angles at the…
A: ΘA = 64 o ΘB = 38 o Weight W = 233 N
Q: the kinetic frictional force. I the parallel force component of the big M along the inclined. M
A: Givenμk=0.30M=8 kgm=3 kgθ=40°
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Q: 2. The figure shows a block of mass M= 12.0 kg on a horizontal surface. An external force of…
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Q: 6. A block of mass 20 kg is pushed against a vertical surface as shown. The coefficient of friction…
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A: Step 1It is given that
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A: The free-body diagram of the block m2 is shown below: N2 is the normal force on the block m2 due to…
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A: Given:- The mass of the box is m = 2.92 kg the force F1 = 22.7 N The acceleration a = 14.0 m/s2…
Q: 2.A dockworker applies a constant horizontal force of 80.0 N toa block of ice on a smooth horizontal…
A: Force ( F ) = 80 N Displacement ( s ) = 11 m Time ( t ) = 5 s Initial velocity ( u ) = 0 m/s
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Q: 4. In the following figure, a box of m₂=2.0 kg appears on an inclined plane with a coefficient of…
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Q: A 3.30 kg block is on a 30° inclined plane with a coefficient of static friction of 0.33 and…
A: Given: The mass of the block is 3.3 kg. The angle of inclination is 30o. The coefficient of kinetic…


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- 4. You are pushing horizontally with a 300 N force on a box that is on an inclined plane as shown. The mass of the box is 30 kg and the incline is at a 25 degree angle off the Fapplied horizontal. The coefficient of kinetic friction between the box and the incline is 0.3, and the coefficient of static friction i 0.4. Assuming the box was at rest at t=0 when the force is initially applied, is the box moving up the ramp, down the ramp, or is it at rest after the force has been applied? 25⁰Which of the following is true regarding the ground reaction force? Group of answer choices pick one answer C. It is an external force D. Internal forces from muscles do not influence the ground reaction force B, C, and D A. It is always equal to mass*9.81 All of the above A, B and C Both B and C B. The resultant ground reaction force is directly proportional to frictionplease help answer, Im not sure what im doing wrong
- 11. Jason works for a moving company. A crate of mass m is sitting on a ramp on his truck; the ramp is angled at an angle with respect to the horizontal. The coefficients of static friction and kinetic friction between the crate and his truck bed are p, and , respectively. What is the magnitude of the force, directed parallel to the ramp, that he needs to exert on the crate to get it to start moving (a) up the ramp and (b) down the ramp? Your answers will be in terms on the symbols m, 0, μs, k and g.Fnorm Fapp = 15 N арp 45° Firiet =- 5 kg gray Assuming that the 5-kg object experience no net force (in equilibrium). the following values will be Fnorm Fgrav = Coefficient of kinetic friction u = O Fnorm = 60.4 N, Ferav = 49.0 N, Coefficient of kinetic friction uk = 0.25. O Fnorm = 38.4 N. Fe =49.0 N. Coefficient of kinetic friction u = 0.28. %3D grav O Fnorm = 49.0 N, Fgrav = 49.0 N, Coefficient of kinetic friction u = 0.22. Fnorm = 9.8 N, Ferav = 98.0 N, Coefficient of kinetic friction u = 0.56. Next3. A block of mass m = 5.9 kg is pulled up a 0 = 21° incline as in the figure below with a force of magnitude F = 37 N. (Hint: remember to measure all angles from +x axis.) y a. Draw a free body diagram showing all the forces. NORml Fte F Mass = 5.9k 0-21° F-37N there b. Determine the x and y components of all the forces. X Components of Force f = 37 N Y comporents of Force F=0N X componnt of normal force=ON * Componis of weight=-5.9x 9.8x Sin 210=70. FJN Y Comperents of weight=5.9a 9.8 x Casal. - 53.98 Y Compenents of normal force=mglos H%53.98, c. Write equations summing all the x components and all the y components. F-mg Sm@= mxa 37-20.72= 5.9x a 2.7l6 = Comporunts) Normal force - mg les 0: 05 53.98-53.98-0o d. Find the acceleration of the block if the incline is frictionless. (Give the magnitude of the acceleration. Find the acceleration of the block if the coefficient of kinetic friction between the block and incline is 0.12. (Give the magnitude of the acceleration.) е. 3
- 9. Two blocks are positioned on surfaces, each inclined at the same angle of 58.3 degrees with respect to the horizontal. The blocks are connected by a rope which rests on a frictionless pulley at the top of the inclines as shown, so the blocks can slide together. The mass of the black block is 3.66 kg, and the coefficient of kinetic friction for both blocks and inclines is 0.460. Assume static friction has been overcome and that everything can slide. What is must be the mass of the white block if both blocks are to slide to the LEFT at an acceleration of 1.5 m/s^2? 2.16 kg 9.99 kg 6.02 kg 3.06 kg9. A 75 N crate is at rest on an incline that is inclined a 25° above the horizontal. The coefficient of static friction between the crate and the incline is 0.25 and the coefficient of kinetic friction between the crate and the incline is 0.15. (a) What is the minimum magnitude of a force parallel to the incline that will prevent the crate from sliding down the incline? (b) What is the minimum magnitude of the force parallel to the incline that will start the crate to move up the incline? (c) Include a force (or free body) diagram of each situation.10. In the figure below, a mass of 500 kg is held motionless in the air by a 120-kg boom and a rope. Find the tension in the rope. Find the force exerted on the boom by the pin at P. The angles are 0 = 30.0° and o = 45.0°. P
- 4. A block of mass 3.00-kg is pushed against a wall by a force P that makes an angle of 50.0° with the horizontal as shown in the figure below. The coefficient of static friction between the block and the wall is 0.250. a. Determine the possible values for the magnitude of P that allow the block to remain stationary. P1O C A cart for hauling ore out of a gold mine has a mass of 439 kg , including its load. The cart runs along a straight stretch of B Track track that climbs a shallow 4.75° incline. A donkey, which is Rope trudging along and to the side of the track, has the unenviable job of pulling the cart up the slope with a 441 N force for a distance of 185 m by means of a rope that is parallel to the slope but makes an angle of 14.5° with the track. A „Track incline Model the rolling resistance of the cart as though it were Horizontal ground sliding on the track with a coefficient of friction of 0.0163. Use g = 9.81 m/s, and note that angle A in the image is the angle of the incline while angle B is the angle the rope makes %3D with the track. Find the work Wa that the donkey performs on the cart during this process. %3D Find the work W, that the force of gravity performs on the cart during this process. = "M Calculate the work W done on the cart by friction during this process. 87