College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Chapter 4, Problem 31PE
Two children pull a third child on a snow saucer sled exerting forces F1 and F2 as shown from above in Figure 4.36. Find the acceleration of the 49.00-kg sled and child system. Note that the direction of the frictional force is unspecified; it will be in the opposite direction of the sum of F1 and F2.
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A block of mass ?=2.80 kg is being pulled by a force ?⃗of magnitude 12.0 N on a horizontal, smooth (frictionless) surface. The force makes an angle ?=30.0° abovethe horizontal, as shown in the figure.
1. Find the magnitude of the normal force exerted by the surface on block.
2. Find the acceleration of the box.
3. If the box starts from rest, what would be its speed after it travels 2.00 m?
A block of mass ?=2.80 kg is being pulled by a force ?⃗ of magnitude 12.0 N on a horizontal, smooth (frictionless) surface. The force makes an angle ?=30.0° abovethe horizontal, as shown in the figure.
a)Find the magnitude of the normal force exerted by the surface on block.
b)Find the acceleration of the box.
c)If the box starts from rest, what would be its speed after it travels 2.00 m?
Discussion #4: Net Force
Solve the problem below. Show your complete and detailed solutions.
The following four forces act on a 4.00 kg object:
J É1 =
300N east
F,
= 700 N north
%3D
F3 500 N west
FA= 600 N south
a. Calculate the net force acting on the object.
b. What is the acceleration of the object?
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Chapter 4 Solutions
College Physics
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Ch. 4 - A flea jumps by exerting a force of 1.20105 N...Ch. 4 - Two muscles in the back of the leg pull upward on...Ch. 4 - A 76.0-kg person is being pulled away from a...Ch. 4 - Integrated Concepts A 35.0-kg dolphin decelerates...Ch. 4 - Integrated Concepts When starting a foot race, a...Ch. 4 - Integrated Concepts A large rocket has a mass of...Ch. 4 - Integrated Concepts A basketball player jumps...Ch. 4 - Integrated Concepts A 2.50-kg fireworks shell is...Ch. 4 - Integrated Concepts Repeat Exercise 4.47 for a...Ch. 4 - Integrated Concepts An elevator filled with...Ch. 4 - Unreasonable Results (a) What is the final...Ch. 4 - Unreasonable Results A 75.0-kg man stands on a...Ch. 4 - (a) What is the strength of the weak nuclear force...Ch. 4 - (a) What is the ratio of the strength of the...Ch. 4 - What is the ratio of the strength of the strong...
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