A ring with moment of inertia mr2 and a sphere with moment of inertia2/5mr2 have the same mass and move with the same initial velocity across a floor,and then encounter identical ramps , if both rolls with out friction and climb someheight up the ramp, what would be the ratio of the height reached by the sphere tothe height reached by the ring ?O A. 0.7O B. 2/55/20.3OE.None of the above

Given, Moment of inertia of ring = Ir = mr2 Moment of inertia of sphere = Is = (2/5) mr2 Let us…

Answered: A ring with moment of inertia mr2 and a…

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

See similar textbooks

Similar questions

Draw the FBD of the entire frame, assuming that friction and the weights of the members are negligible. How many unknowns appear on this FBD?
An arborist is cutting down a tree a 28 m high tree bystarting his cut 1.8 m above the ground. The tree has a mass of 3750 kg. The tree trunk can be thought of as a uniformly dense, thin rod. 1. What's the speed of the tree’s center of mass when the trunk is parallel to the ground on its way down. The tree rotates about the point where it is cut., 1.8 m above the ground. 2. What is the total amount of kinetic energy that the tree has at thatpoint of parallelism to the ground? How fast would a 950.0 kg truck have to be traveling to have the same kinetic energy as the tree?
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.
Need help in 15 minutes. ASAP. A 75-kg block is attached to a cable. The cable is then attached to a rotating assembly with a mass moment of inertia of 18 kg-m^2. The bearing friction applied at the rotating assembly equivalent to a couple of 45 N-m CCW. The block's downward speed is initially at 2 m/s. What is the total work done by the system after the rotating assembly has rotated 1.5 radians CW? What is the speed of the 75-kg block after the rotating assembly rotated 1.5 rad CW?
Question 3 A cylinder rolls freely down at 2°. What will be its speed after rolling 10 m from rest down the incline? What is the total kinetic energy? The mass of the cylinder is 30 kg.
A riveting machine is used for riveting sheets of 20 mm thickness. The machine is driven by a geared motor of 5 kW. The mass moment of inertia of the rotating parts of the machine attached to flywheel is found to be 10 kg- m². At the beginning of the operation, the flywheel is making 15 r.p.s. If making one rivet takes 30 KN-m of energy in 5 second, then find the reduction of speed of the flywheel
R - m 130° A hollow wheel of mass given by m 50 kg rolls down an incline of 30° without slipping. The inner radius of the wheel is given by R = 50 mm and its thickness is given by d = 5 mm. Gravity acts down. (a) Show that the moment of inertia of the wheel is given by Ī = 138 125 kg mm². (b) Show that the linear acceleration of the wheel's centre of gravity ā is related to the angular acceleration of the wheel a via a (55 mm)a. = (c) Analyse an appropriate free-body diagram to determine the linear acceleration of the wheel's centre of gravity ā.
A riveting machine is driven by a 4 kW motor. The moment of inertia of the rotating parts of the machine is equivalent to 140 kg-m2 at the shaft on which the flywheel is mounted. At the commencement of operation, the flywheel is making 240 r.p.m. If closing a rivet occupies 1 second and consumes 10 kN-m of energy, find the reduction of speed of the flywheel. What is the maximum rate at which the rivets can be closed?
2. A 20 kg box sitting on a horizontal surface is pulled by a horizontal force of 64 N. The coefficient of kinetic friction between the box and the surface is 0.2. (Draw free-body diagram here) vsebn lognA en MOIT ANIMAX MATUM70038 blow 10 ode no tos 2010 Owl I 02 sa 0£to shingem seer sosot toriso 21 to obutingam and count onOno gol a. What is the normal force acting on the box?ib et bas 1910 marsib vbod-seil wai(1) b. What is the force of kinetic friction acting on the box? od no oond ton silt ei tad s c. What is the acceleration of the box? rss sdr to noitestsson sdt at tod in
Q3: A frozen-juice can rests on the horizontal rack of a freezer door as shown. With what maximum angu- lar velocity a can the door be "slammed" shut against its seal and not dislodge the can? Assume that the can rolls without slipping on the corner of the rack, and neglect the dimension d compared with the 500-mm distance. Ans. 1.135 rad/s 500 mm 35 mm 7 mm
A. A motorcycle and rider have a combined mass of 350kg. The wheels each have a mass of 20kg, diameter of 500mm and radius of gyration of 200mm. The rider accelerates uniformly from 5m/s to 25m/s over a distance of 100m, whilst climbing a hill of slope 1 in 20. The average resistance to motion, including drag, is 105 N. 1. Determine the total work done as the motorcycle ascends the incline. 2. Calculate the amount of power developed during the climb. B. At another point in its journey, the motorcycle and rider travel at 80 km/h around a left-hand bend of radius 30m. Calculate: 1. The angular velocity of each of the wheels. 2. The moment of inertia of each wheel. 3. The magnitude and effect of the gyroscopic torque produced on the bike.
A space station shaped like a giant wheel has a radius 98 m and a moment of inertia of 5.01 x 108 kg-m2. A crew of 150 lives on the rim, and the station is rotating so that the crew experiences an apparent acceleration of 1 g. When 100 people move to the center of the station for a union meeting, the angular speed changes. What acceleration is experienced by the managers remaining at the rim? Assume that the average mass of each inhabitant is 65.0 kg. m/s2

SEE MORE QUESTIONS

Recommended textbooks for you

International Edition---engineering Mechanics: St…

Mechanical Engineering

ISBN:

9781305501607

Author:

Andrew Pytel And Jaan Kiusalaas

Publisher:

CENGAGE L