COLLEGE PHYSICS,VOLUME 1
2nd Edition
ISBN: 9781319115104
Author: Freedman
Publisher: MAC HIGHER
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Chapter 4, Problem 35QAP
To determine
To estimate the weight of five common objects using newtons
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Weight of a body mass 7.0 kg is 70 N.
What will be the weight of a boy of mass
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(a) kgf
(b) N
Two forces F, and F, act on a 6.00-kg object. F, - 25.0 N and F, = 10.0 N.
90.0°
60.0
(a) Find the acceleration of the object for the configuration of forces shown in Figure (a).
magnitude
m/s2
direction
(counterclockwise from F,)
(b) Find the acceleration of the object for the configuration of forces shown in Figure (b).
magnitude
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direction
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Three forces acting on a spherical mass M are depicted in the diagram below.
60
€50
Force, Vertical-component (N)
40
30
20
10
0
-10
-20
-30
-30 -20 -10 0 10 20 30 40 50 60 70 80
Force, Horizontal-component (N)
A. Calculate the magnitude and direction (i.e., the angle with respect to the
positive H-axis, measured positive as counter-clockwise), of the total force acting
on M. Notice that the arrows representing the forces end on grid intersections.
Magnitude:
Direction:
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B. When a fourth force is applied to the mass, it is observed that the velocity of
the mass stops changing and remains constant. What are the horizontal and
vertical components of that fourth force?
Horizontal:
Vertical:
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Chapter 4 Solutions
COLLEGE PHYSICS,VOLUME 1
Ch. 4 - Prob. 1QAPCh. 4 - Prob. 2QAPCh. 4 - Prob. 3QAPCh. 4 - Prob. 4QAPCh. 4 - Prob. 5QAPCh. 4 - Prob. 6QAPCh. 4 - Prob. 7QAPCh. 4 - Prob. 8QAPCh. 4 - Prob. 9QAPCh. 4 - Prob. 10QAP
Ch. 4 - Prob. 11QAPCh. 4 - Prob. 12QAPCh. 4 - Prob. 13QAPCh. 4 - Prob. 14QAPCh. 4 - Prob. 15QAPCh. 4 - Prob. 16QAPCh. 4 - Prob. 17QAPCh. 4 - Prob. 18QAPCh. 4 - Prob. 19QAPCh. 4 - Prob. 20QAPCh. 4 - Prob. 21QAPCh. 4 - Prob. 22QAPCh. 4 - Prob. 23QAPCh. 4 - Prob. 24QAPCh. 4 - Prob. 25QAPCh. 4 - Prob. 26QAPCh. 4 - Prob. 27QAPCh. 4 - Prob. 28QAPCh. 4 - Prob. 29QAPCh. 4 - Prob. 30QAPCh. 4 - Prob. 31QAPCh. 4 - Prob. 32QAPCh. 4 - Prob. 33QAPCh. 4 - Prob. 34QAPCh. 4 - Prob. 35QAPCh. 4 - Prob. 36QAPCh. 4 - Prob. 37QAPCh. 4 - Prob. 38QAPCh. 4 - Prob. 39QAPCh. 4 - Prob. 40QAPCh. 4 - Prob. 41QAPCh. 4 - Prob. 42QAPCh. 4 - Prob. 43QAPCh. 4 - Prob. 44QAPCh. 4 - Prob. 45QAPCh. 4 - Prob. 46QAPCh. 4 - Prob. 47QAPCh. 4 - Prob. 48QAPCh. 4 - Prob. 49QAPCh. 4 - Prob. 50QAPCh. 4 - Prob. 51QAPCh. 4 - Prob. 52QAPCh. 4 - Prob. 53QAPCh. 4 - Prob. 54QAPCh. 4 - Prob. 55QAPCh. 4 - Prob. 56QAPCh. 4 - Prob. 57QAPCh. 4 - Prob. 58QAPCh. 4 - Prob. 59QAPCh. 4 - Prob. 60QAPCh. 4 - Prob. 61QAPCh. 4 - Prob. 62QAPCh. 4 - Prob. 63QAPCh. 4 - Prob. 64QAPCh. 4 - Prob. 65QAPCh. 4 - Prob. 66QAPCh. 4 - Prob. 67QAPCh. 4 - Prob. 68QAPCh. 4 - Prob. 69QAPCh. 4 - Prob. 70QAPCh. 4 - Prob. 71QAPCh. 4 - Prob. 72QAPCh. 4 - Prob. 73QAPCh. 4 - Prob. 74QAPCh. 4 - Prob. 75QAPCh. 4 - Prob. 76QAPCh. 4 - Prob. 77QAPCh. 4 - Prob. 78QAPCh. 4 - Prob. 79QAPCh. 4 - Prob. 80QAPCh. 4 - Prob. 81QAPCh. 4 - Prob. 82QAPCh. 4 - Prob. 83QAPCh. 4 - Prob. 84QAPCh. 4 - Prob. 85QAPCh. 4 - Prob. 86QAPCh. 4 - Prob. 87QAPCh. 4 - Prob. 88QAPCh. 4 - Prob. 89QAPCh. 4 - Prob. 90QAPCh. 4 - Prob. 91QAPCh. 4 - Prob. 92QAPCh. 4 - Prob. 93QAPCh. 4 - Prob. 94QAPCh. 4 - Prob. 95QAPCh. 4 - Prob. 96QAPCh. 4 - Prob. 97QAPCh. 4 - Prob. 98QAPCh. 4 - Prob. 99QAPCh. 4 - Prob. 100QAPCh. 4 - Prob. 101QAPCh. 4 - Prob. 102QAPCh. 4 - Prob. 103QAP
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- A force F1, of magnitude 6.00 units acts on an object at the origin in a direction = 30.0 above the positive x-axis (Fig. P3.8). A second force F2 of magnitude 5.00 units acts on the object in the direction of the positive y-axis. Find graphically the magnitude and direction of the resultant force F1 + F2?. Figure P3.8arrow_forwardDetermine whether each of the following statements is true or false. a. An objects weight is always equal to its mass. b. The force of tension always pushes. c. The magnitude of the sum of the forces on an object is never greater than its weight. Explain.arrow_forwardA crate remains stationary after it has been placed on a ramp inclined at an angle with the horizontal. Which of the following statements must be true about the magnitude of the frictional force that acts on the crate? (a) It is larger than the weight of the crate. (b) It is at least equal to the weight of the crate. (c) It is equal to sn. (d) It is greater than the component of the gravitational force acting down the ramp. (e) It is equal to the component of the gravitational force acting down the ramp.arrow_forward
- A large crate of mass m is placed on the flatbed of a truck but not tied down. As the truck accelerates forward with acceleration a, the crate remains at rest relative to the truck. What force causes the crate to accelerate? (a) the normal force (b) the gravitational force (c) the friction force (d) the ma force exerted by the crate (e) No force is required.arrow_forwardA 23.4 kg lead mass rests on the bottom of a pool. What is the normal force acting on the lead? (?lead = 11.3 × 103 kg m–3)arrow_forwardThe x and y coordinates of an object with a mass of 2 kg are given as x = t ^ 2, y = 2t ^ 3, with t seconds. Find the magnitude of the net force on the object at t = 1 sec.A) 14 NB) 4.5 NC) 22 N D) 24.3 NE) 1.8 Narrow_forward
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- You are using a hammer to pull a nail from the floor. Force F⃗ 2 is the force you apply to the handle, and force F⃗ 1 is the force the hammer applies to the nail. Suppose that the maximum magnitude of the force F⃗ 2 that you can apply to the hammer is 25 lb. If you apply this force, what is the magnitude of the force F⃗ 1 that the hammer applies to the nail? (lb)arrow_forwardObject's mass is 15 kg is resting on a table. An external force ( 10 N) act with angle ( 30) on this object. Find the minimum force let it moving. (g=10m/sec2) O 5 N O 150 N O 8.66 Narrow_forwardcalculate the tension (in N) of a horizontal strand of spider web if a spider with a mass of 9.00x10-5kg sits in the middle of the web. The strand sags 12 degrees below the horizontal. Find the ratio between the horizontal strand and a vertical strand which has the same spider. (tension in vert)/(tension in hori)arrow_forward
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