Problem 8.4 As shown in Fig. 8.20, consider a block moving down an incline as the result of externally applied force F parallel to the incline. The incline makes an angle a with the horizontal. If the coefficient of kinetic friction between the block F and the incline is u, determine an expression for the acceleration az of the block in the direction of motion. Answer: az =+g(sina – µ cos a) m Fig. 8,20 Problem 8.4

Problem 8.4 As shown in Fig. 8.20, consider a block moving down an incline as the result of externally applied force F parallel to the incline. The incline makes an angle a with the horizontal. If the coefficient of kinetic friction between the block F and the incline is u, determine an expression for the acceleration az of the block in the direction of motion. Answer: az =+g(sina – µ cos a) m Fig. 8,20 Problem 8.4

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 90AP: Repeat the preceding problem, but including a drag force due to air of fdrag=bv .

See similar textbooks

Similar questions

In the friction experiment, if the friction block has a mass of 599 g, and it started to move at a constant speed after giving it a slight push when the mass in the hanger is 284 g (including the hanger), what is the coefficient of kinetic friction?
A block, initially at rest, has a mass m and sits on a plane inclined at angle theta. It slides a distance d before hitting a spring and compresses the spring by a maximum distance of xf. If the coefficient of kinetic friction between the plane and block is uk, then what is the force constant of the spring?
Enter an expression for the magnitude of the force of the bottom-most parcel on the center parcel valid for any value of the vertical acceleration, ay, using only the parameters provided in the palette
What would be the maximum weight W of the block, shown in the following figure, so that the tension developed in any cable does not exeed 100 N
What is the coefficient of kinetic friction μk between the block and the tabletop?
A train, traveling at 66 mi/h, rounds a horizontal curve of 390 ft radius. A passengerstanding in the lounge notes that she mustlean inward to keep from falling. Let an angle leaning inward be positive and outward benegative.At what angle from vertical must she lean?Since the radius of the curve is much greaterthan the height of the passenger, neglecttorques. 1 mile = 5,280 ft.Answer in units of ◦.
In the figure, a climber leans out against a vertical ice wall that has negligible friction. Distance a is 0.975 m and distance L is 1.90 m. His center of mass is distance d = 0.91 m from the feet-ground contact point. If he is on the verge of sliding, what is the coefficient of static friction between feet and ground?
A 4.45 x 104N truck is travelling at 100 km/h. If the coefficient of friction between the tires and the roadway is 0.50, whatis the minimum distance the truck will go before stopping?
A 1500 N block is in contact with a level plane whose coefficient of kinetic friction is 0.12. If the block is acted upon by a horizontal force of 250 N, what time, in seconds, will elapse before the block reaches a velocity of 14.5 m/s, starting from rest?
(a) You have to lift a load of 500 N. Which pulley system will you prefer? Why? Find outthe effort to be applied in the pulley system you chose.(b) Consider two scenarios. A ball of weight 10 N rolls on the floor and a block of weight10 N slides on a table. In which case will the applied force required to just set the body inmotion greater? Why?
Multiple-choice question: As shown in the figure, both the vertical wall and the fixed slope are smooth, then the magnitude of the force acting on the slope by a ball with mass m
Please answer this NEATLY, COMPLETELY, and CORRECTLY for an UPVOTE. In the system shown, a 150 N collar-pulley assembly slides on a horizontal shaft with coefficient of kinetic friction μk = 0.10 between the collar and the shaft, and is acted upon by a force P with a magnitude of P = 253.5 N at an angle θ = 30.35° as shown. Knowing that the assembly is initially at rest, what is the time when the velocity reaches to 3 m/s? Also, at this instant, find the tension in the cord and the velocity of block A.