Question 4 of my study guide, not graded... How do you solve What is the work done by this net force?b)What is the increase in kinetic energy of the mass? If the mass starts from rest, what is its final kinetica)energy?2. The mass of the Earth is 5.98 x 10 kg, and its average radius is 6370 km. Find the gravitational force (theweight) of a 50-kg person standing on Earth's surface by using Newton's law of gravitation. If the person nowstands on another planet whose mass is double of the Earth's mass and radius is 3 times of the Earth's radius,what is the person's weight?3. A 75-kg woman in an elevator is accelerating upward at a rate of 0.6 m/s.a) What is the net force acting upon the woman?b) What is the gravitational force acting upon the woman?c) What is the normal force pushing upward on the woman's feet?4. A very large cat sits at the center of a swing. Two scales are attached to the ropes.One scale reads 5 kg.A. What does the second scale read?B. What is the combined weight of the cat and swing?5kg

This question can be solved using the concept of mechanical equilibrium. According to which the sum…

Answered: 4. A very large cat sits at the center…

4. A very large cat sits at the center of a swing. Two scales are attached to the ropes. One scale reads 5 kg. A. What does the second scale read? B. What is the combined weight of the cat and swing?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter8: Conservation Of Energy

Section: Chapter Questions

Problem 12PQ

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Concept explainers

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

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Question 4 of my study guide, not graded... How do you solve

What is the work done by this net force?
b)
What is the increase in kinetic energy of the mass? If the mass starts from rest, what is its final kinetic
a)
energy?
2. The mass of the Earth is 5.98 x 10 kg, and its average radius is 6370 km. Find the gravitational force (the
weight) of a 50-kg person standing on Earth's surface by using Newton's law of gravitation. If the person now
stands on another planet whose mass is double of the Earth's mass and radius is 3 times of the Earth's radius,
what is the person's weight?
3. A 75-kg woman in an elevator is accelerating upward at a rate of 0.6 m/s.
a) What is the net force acting upon the woman?
b) What is the gravitational force acting upon the woman?
c) What is the normal force pushing upward on the woman's feet?
4. A very large cat sits at the center of a swing. Two scales are attached to the ropes.
One scale reads 5 kg.
A. What does the second scale read?
B. What is the combined weight of the cat and swing?
5kg

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