« previous next »

Author Question: A 500-kg elevator is pulled upward by a cable that exerts a constant force of 5500 N on the elevator ... (Read 647 times)

ETearle

  • Hero Member
  • *****
  • Posts: 580
on: Jul 29, 2018
A 500-kg elevator is pulled upward by a cable that exerts a constant force of 5500 N on the elevator for a distance of 50.0 m. The elevator is the system.
 
  (a) What is the work done by the 5500-N force? (b) What is the work done by the gravitational force? (c) What is the net work done on the elevator?

Question 2

If the Sun were twice as massive
 
  A) its pull on the Earth would double.
  B) Earth's pull on the Sun would double.
  C) both of these
  D) none of the above


mcni194

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 275 Kj (b) -245 kJ (c) 30.0 kJ

Answer to Question 2

Answer: C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

ETearle

  • Hero Member
  • *****
  • Posts: 580
Reply #2 on: Jul 29, 2018
Thanks


mcni194

  • Sr. Member
  • ****
  • Posts: 311
Reply #3 on: Jul 29, 2018
Welcome :)


« previous next »
 

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

The cultural and racial–ethnic diversity of today’s work force has led to the need for diversity ... The cultural and racial–ethnic diversity of today’s work force has led to the need for diversity ...
Proportion of Women and Men in the U.S. Labor Force Proportion of Women and Men in the U.S. Labor Force
The movement of water vapor molecules exerts vapor pressure on surfaces. The movement of water vapor molecules exerts vapor pressure on surfaces.
When both sides of the back have been massaged, redrape the back. With light to moderate force, use ... When both sides of the back have been massaged, redrape the back. With light to moderate force, use ...
Question about Resultant of gravitational force? Question about Resultant of gravitational force?
Question about Resultant of gravitational force? Question about Resultant of gravitational force?
Video: Stroke volume - preload, sarcomere length and Frank -Starling law

For a complete list of videos, visit our video library