2. The cylinder shown below with mass M and radius R is held by a hand that is accelerated upward so that the center of mass of the cylinder does not move. (lcm = (1/2)MR3AT a) Find the tension in the string. b) Find the angular acceleration of the cylinder. c) Find the acceleration of the hand. R M T

2. The cylinder shown below with mass M and radius R is held by a hand that is accelerated upward so that the center of mass of the cylinder does not move. (lcm = (1/2)MR3AT a) Find the tension in the string. b) Find the angular acceleration of the cylinder. c) Find the acceleration of the hand. R M T

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

The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016, determine the force F required to advance the bar at a constant speed.
1) Diagram below shows four masses M,E,R,S carried by a rotating shaft at radii 100, 125, 200 and 150 mm respectively. The mass of E,R,S are 10 kg, 5 kg, and 4 kg respectively. The planes in which the masses revolve between M and E are 2mm, E and R are 1mm, R and S are 1mm. Determine the required mass of A, mA and the angles a,b,c relative to mass B so that the shaft shall be in complete balance.
A uniform rod of mass M = 2.3 kg and length L = 0.2 m, lying on a frictionless horizontal plane, is free to pivot about a vertical axis through one end, as shown. The moment of inertia of the rod about this axis is given by 1/3 ML2. If a force F = 7 N, q = 47° acts as shown, what is the resulting angular acceleration (in rad/s2) about the pivot point?
Suppose a 30 lb truck wheel 18 in. in diameter has a radius of gyration of 4 in. and the 6120 lb truck’s weight is distributed equally to each of the four wheels.a. If the truck can supply 150 lb x ft of torque to each wheel, how fast would the wheel want to accelerate if it didn’t slip? b. What would the coefficient of friction have to be in order to keep the wheel from slipping
Find the torque T, in Nm, that will keep the mechanism balanced at q = 30 degrees in the system shown. The limbs AE and CD are connected to each other at their midpoints, each having a length of L = 3.7 meters and a mass of m = 117 kg. The mass of the upper horizontal platform-shaped limb is 248 kg and the mass of the car is 1.123 kg and they have the centers of gravity shown in the figure.
Please draw the picture of this problem and solve it. A uniform rigid disk has mass M and radius a, and a uniform rigid rod has mass M' and length b. The rod is placed along the axis of symmetry of the disk with one end in contact with the disk. Find the forces necessary to pull the disk and rod apart.
Three masses are attached to a uniform meter stick, as shown in figure. The mass of the meter stick is 150.0 g and the masses to the left of the fulcrum are m1 = 50 kg, m2 = 75 kg, and m3 that balances the system when it is attached at the right end of the sticky, and the normal reaction force at the fulcrum when the system is balanced. Also, find the mass m3.
Consider a disc of mass, M with radius 0.5 m on a slope with angle 45 degrees to the horizontal. It has a good grip on the slope and does not slip. The disc is constructed so that its mass per unit area, ρ(r) = r1/2 kg m−2, with r being the radial distance in metres from the axis of the disc. What is the equation describing the linear acceleration of the centre of mass of the disc down the slope in terms of the angular acceleration of the disc.
A machine part has the shape of a solid uniform sphere of mass 220 gg and diameter 3.50 cmcm . It is spinning about a frictionless axle through its center, but at a point at the top of the sphere, it is scraping against metal, resulting in a friction force of 0.0200 NN at that point. Find the angular acceleration of the sphere, including the direction (a positive value would indicate the +z direction and a negative value would indicate the -z direction).
The shaft, bearing two unbalanced masses, rotates at a constant speed of ω = 20 r/s. In the case of balancing in the DI and DII planes, find the balancing values (kg.mm) and their positions.
A sphere of mass M and radius R is not necessarily solid or hollow. It has moment of inertia I= cMR2. As shown in the figure, the sphere starts from rest and rolls without slipping down a ramp from height H. It then moves back up the other side, but now with no friction at all between the sphere and the ramp. What height does the sphere reach?
On a wheel of mass 2.75 kg act 3 forces as shown in figure. Determine the angular acceleration felt by the wheel due to these forces.