A small object A is held against the vertical side of the rotating cylinderical container of raidus r due to entrifugal action coefficient of astatic friction between the object and the container is determine the expression for the maximum rotational rate co of the container which will keep the object from slipping out the vertical side.
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- The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a mean radius of 75 mm. The static and kinetic coefficients of friction between the gear and the screw are 0.12 and 0.06, respectively. The input torque applied to the screw is C0=10Nm. Assuming constant speed operation, determine the output torque C1 acting on the gear.the system blocks shown below is in equilibrium, the weight of block A is 10 kN and for block B is 35 kN. The coefficient of friction between A and surface is 0.2 and between two block A and B is 0.15. Answer :the following P=40KN B The value of friction force between the * block B and it's surface is 25 kN 35 kN 15 kN Non above-mentioned * The system is in Equilibrium Impending to motion KinematicThe mass of the flat belt is 0.6kg/m and the tension on the tight side of the belt is 1.7kN the coefficient of friction between the belt and the pulley is 0.2 and the angular speed N of the belt is 400rpm.Angle of lap fita and the diameter D of the pulley 150°and 50cm respectively.with the addition of centrifugal tension Design the belt drive by determine velocity belt centrifugal tension tension on the slack side of the belt power transmitted at this speed in kilowatts maximum power delivered
- 3ft 30° 4 ft a Small aate weighing 2e6 contains a ball weighing 3 es. Rey are released fom rest at 'The which has friction of 0.3 with The epate, at the bottom of the incline. the crate is stopped by continues, mouing out of the crate, The ball Smo0thly impacts weigh ing 4 eb, which is suppated by Apring of const ant 50 lb/ft. The coefficient of rest itution for This collision 0.6. The ball bounces away. top of the incline, a coeffizi ent of Kihe tre bumper, but the ball a platter a a is Frnd : The maximum compretsion of The speing.3- (WORK AND ENRGY) The block M in Fig (a) weighs 500N and has a downward velocity of 5 m/s at the instant the force P-1 kN is applied. The coefficient of friction between the arm AB and the rotating body is 0,4. The rotating body weighs 800 N and has a centroidal radius of gyration of 50 cm. Find the distance the weight travels before coming to rest. 30cm. 60cm 30cmTwo blocks having the weights and positions shown in Fig. P-1243 rest upona frame which rotates about its vertical axis at a constant speed. Thecoefficient of friction between the blocks and the frame is 0.20. The weightand friction of the pulley being neglected, at what speed in rpm will theblocks start to slide2 What is the tension in the cord at this instant?
- pls send me answer of this question all the parts pls and i will rate you sure, pls solve a,b,c and d and also a and b A 200-kg dragster (racing car) exerts a constant force of 4000 N during a race. The coefficient of kinetic friction between the tires and the pavement is .15. If the drag strip is 1000 m long, determine:a. The net force on the dragster. b. The acceleration of the dragster. c. The time it takes for the dragster to finish the race.d. The dragster's velocity at the end of the race.The dragster now needs to slow down, so it opens a parachute. The force of air drag is 3500 N. The driver also locks the brakes of the dragster, and the coefficient of kinetic friction becomes .75. Determine:a. How long it will take to stop the dragster.b. The distance the dragster travels while stopping.The arms of a Hartnell governor are of equal length. At the mid-position of the sleeve, theball arm is vertical and the radius at which the ball rotates is 10 cm when the equilibriumspeed is 400 RPM. On changing the speed by 1% the governor can overcome the frictionat this position. The friction force is assumed to have a constant value of 20 N at thesleeve. The sleeve moves ± 1.5 cm from the mean position. The minimum speed of thegovernor including friction is 450 rpm. The mass of the sleeve is 3.5 kg. Calculate themagnitude of rotating masses and initial compression ofis the coefficient of kinetic friction? A force of 1000 N is applied to a 1200-kg car. If the coefficient of rolling friction is 0.04, what is the car's acceleration? The coafficionts of static and kinetic friction for pectively 05 and 04 Jfa 150 k
- The combined mass of the motorcycle and its rider in Fig. a, and b is 250 kg. The mass center is at C. The wheels are locked when the brakes are applied at high speed. The coefficient of kinetic friction is 0.5, and the angular acceleration is zero. Determine the acceleration a- H1. A wooden block of mass m is pushed over a floor in a straight line in the x direction with a constant velocity vo > 0. At time t = 0, when the block is at position x = 0, it is no longer pushed and the block experiences only a constant sliding friction force F in the negative x-direction until it comes to rest. (i) Write down the equation of motion of the block for t > 0. Calculate the time, t, at which the block comes to a stop and also find the distance, d, travelled by the block from the time when the pushing is stopped to the time when it comes to rest. (ii) Calculate the work done by the friction force from x = 0 to x = d, and then show that it is equal to the change in the kinetic energy of the block.The figure shows a pair of pin-jointed gripper-tongs holding an object weighing 2000 N. The coefficient of friction (u) at the gripping surface is 0.1. XX is the line of action of the input force and YY is the line of application of gripping force. If the pin- joint is assumed to be frictionless, the magnitude of force Frequired to hold the weight is F Pin Y- 2000 N 150mm ww 00