**47. The crane shown in the Pulley- drawing is lifting a 180-kg crate upward with an accel- eration of 1.2 m/s². The cable from the crate passes over a solid cylindrical pulley at the top of the boom. The pulley has a mass of 130 kg. The cable is then wound onto a hollow cy- Drum Boom lindrical drum that is mounted on the deck of the crane. The mass of the drum is 150 kg, and its radius is 0.76 m. The engine applies a counterclockwise torque to the drum in order to wind up the cable. What is the magnitude of this torque? Ignore the mass of the cable.

**47. The crane shown in the Pulley- drawing is lifting a 180-kg crate upward with an accel- eration of 1.2 m/s². The cable from the crate passes over a solid cylindrical pulley at the top of the boom. The pulley has a mass of 130 kg. The cable is then wound onto a hollow cy- Drum Boom lindrical drum that is mounted on the deck of the crane. The mass of the drum is 150 kg, and its radius is 0.76 m. The engine applies a counterclockwise torque to the drum in order to wind up the cable. What is the magnitude of this torque? Ignore the mass of the cable.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

**47. The crane shown in the
Pulley-
drawing is lifting a 180-kg
crate upward with an accel-
eration of 1.2 m/s². The cable
from the crate passes over a
solid cylindrical pulley at the
top of the boom. The pulley has
a mass of 130 kg. The cable is
then wound onto a hollow cy-
Drum
Boom
lindrical drum that is mounted
on the deck of the crane. The mass of the drum is 150 kg, and its radius
is 0.76 m. The engine applies a counterclockwise torque to the drum in
order to wind up the cable. What is the magnitude of this torque? Ignore
the mass of the cable.

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