College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Question
Chapter 8, Problem 76AP
(a)
To determine
The force exerted by the hammer claws on the nail.
(b)
To determine
The force exerted by the surface at the point of contact with the hammer head.
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A 10 N ball is supported by an incline and a cable making an angle a with the
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When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure a. The total
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model of the situation is shown in Figure b, where T is the force exerted by the Achilles tendon on the foot and R is the
force exerted by the tibia on the foot. Find the values of T, R, and 0 when F, = n = 770 N. (For 0, enter the smaller of the
g'
two possible values between 0° and 90°.)
-Achilles
tendon
Tibia
15.0°
18.0 cm
25.0 cm
a
T =
R =
N
=
Submit Answer
When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure a. The total gravitational force on the body, F, is supported by the force n
exerted by the floor on the toes of one foot. A mechanical model of the situation is shown in Figure b, where T is the force exerted by the Achilles tendon on the foot and R is the
force exerted by the tibia on the foot. Find the values of T, R, and 0 when F, = n = 720 N. (For 0, enter the smaller of the two possible values between 0° and 90°.)
-Achilles
tendon
Tibia
15.0°
18.0 cm
25.0 cm
a
T =
R =
N
z z o
Chapter 8 Solutions
College Physics
Ch. 8.4 - Using a screwdriver, you try to remove a screw...Ch. 8.4 - A constant net torque is applied to an object....Ch. 8.4 - The two rigid objects shown in Figure 8.21 have...Ch. 8.5 - Two spheres, one hollow and one solid, are...Ch. 8.6 - A horizontal disk with moment of inertia I1...Ch. 8.6 - If global warming continues, its likely that some...Ch. 8 - Why cant you put your heels firmly against a wall...Ch. 8 - Two point masses are the same distance R from an...Ch. 8 - If you see an object rotating, is there...Ch. 8 - (a) Is it possible to calculate the torque acting...
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