A crate with a mass of 72.0 kg is pulled up an inclined surface by an attached rope, which is driven by a motor. The crate moves a distance of 45.0 m along the surface at a constant speed of 2.3 m/s. The surface is inclined at an angle of 30.0° with the horizontal. Assume friction is negligible. (a) How much work (in kJ) is required to pull the crate up the incline? kJ (b) What power (expressed in hp) must a motor have to perform this task? hp
A crate with a mass of 72.0 kg is pulled up an inclined surface by an attached rope, which is driven by a motor. The crate moves a distance of 45.0 m along the surface at a constant speed of 2.3 m/s. The surface is inclined at an angle of 30.0° with the horizontal. Assume friction is negligible. (a) How much work (in kJ) is required to pull the crate up the incline? kJ (b) What power (expressed in hp) must a motor have to perform this task? hp
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter7: Conservation Of Energy
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Problem 79P: A block of mass 0.500 kg is pushed against a horizontal spring of negligible mass until the spring...
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![A crate with a mass of 72.0 kg is pulled up an inclined surface by an attached rope, which is driven by a motor. The crate moves a distance of 45.0 m along the surface at a
constant speed of 2.3 m/s. The surface is inclined at an angle of 30.0° with the horizontal. Assume friction is negligible.
(a) How much work (in kJ) is required to pull the crate up the incline?
kJ
(b) What power (expressed in hp) must a motor have to perform this task?
hp](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F84f39a0e-1c16-43ec-bcb3-7f889ca233a2%2F140ed7c0-1651-436a-9d9d-2a8ebb415134%2Fmh0sar_processed.png&w=3840&q=75)
Transcribed Image Text:A crate with a mass of 72.0 kg is pulled up an inclined surface by an attached rope, which is driven by a motor. The crate moves a distance of 45.0 m along the surface at a
constant speed of 2.3 m/s. The surface is inclined at an angle of 30.0° with the horizontal. Assume friction is negligible.
(a) How much work (in kJ) is required to pull the crate up the incline?
kJ
(b) What power (expressed in hp) must a motor have to perform this task?
hp
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