Linear speed, v=8 m/s
Radius of drum, R= 1m
Angular speed,
= 8/1 = 8 rad/s {answer}
An elevator cable winds on a drum of R=1meters, that is connected to a motor. The...
The 750 kg elevator is operated as the cable winds around the rotating drum (r=0.2 m) A which is driven by a motor. Determine the constant torque M which must be supplied to the shaft of the drum by the motor in order to give the elevator an upward velocity of 3 m/s in a vertical rise of 4 m starting from rest. Neglect the mass of the drum and assume it is in rotational equilibrium (constant rotational speed). Neglect...
A skyscraper in Manhattan has an elevator that weighs 1000 kg when loaded. The elevator is lifted at a constant rate to 480m above the ground by an electric winch motor. The drum of the winch motor is a solid uniform cylindrical drum in which a steel cable can wrap around it. The mass of the drum is 500 kg and has a diameter of 1 m. It takes the elevator a total of 120 s to get to the...
The cable lifting an elevator is wrapped around a 1.1-mm-diameter cylinder that is turned by the elevator's motor. The elevator is moving upward at a speed of 2.3 m/sm/s . It then slows to a stop, while the cylinder turns one complete revolution.How long does it take for the elevator to stop?
In the figure below, a motor winds in the cable with a constant acceleration, such that the 10-kg crate moves a distance s = 3 min 3 seconds, starting from rest. (vo = 0). The coefficient of kinetic friction between the crate and the plane is Mk = 0.3. M A 30° Determine the tension T developed in the cable.
The cable lifting an elevator is wrapped around a 1.2-m-diameter cylinder that is turned by the elevator's motor. The elevator is moving upward at a speed of 3.0 m/s. It then slows to a stop, while the cylinder turns one complete revolution. Part A: How long does it take for the elevator to stop?
The motor winds the cable with a constant acceleration, such that the 30 kg crate moves a distance s8.5 m in 2.1s, starting from rest. c. Determine the tensionevelod in the cable. The coefficient of kinetic friction between the crate and the plane Mg = 0.25. 30°
A single cable supports an 703-kg elevator car. What is the tension in the cable when the car is moving with constant speed? What is the tension in the cable when the car is moving with an upward acceleration of 3.50 m/s2? What is the tension in the cable when the car is moving with a downward acceleration of 3.50 m/s2?
4) Find the tension in an elevator cable if the 1000 kg elevator is descending with an acceleration of 2.8m/s^2 downward. 6) A 0.15 m radius grinding wheel starts at rest and develops an angular velocity of 12.0 rad/s in 4 sec. What is the average tangential acceleration of a point on the wheels edge? 7) A point on the rim of a 0.25 m radius wheel has a centripetal acceleration of 4.0 m/s^2. What is the angular velocity of...
The cable lifting an elevator is wrapped around a 1.0-m-diameter cylinder that is turned by the elevator's motor. The elevator is moving upward at a speed of 1.7 m/s . It then slows to a stop, while the cylinder turns one complete revolution. How long does it take for the elevator to stop? Express your answer to two significant figures and include the appropriate units. Thanks for the help!
1). A cart of mass M = 500 g on 20.0 degree incline plane is connected by a light string passing over massless pulley to the mass m=200 g hanging on the string. What is the acceleration of the cart (say, in +x downhill direction) acart = m/s', of the hanging mass amass m = m/s”, and how much is the tension in the thread T = 2) Two masses m=1.00 kg and M= 2.00 kg are hanging on a...