Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
12th Edition
ISBN: 9781259587399
Author: Eugene Hecht
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 3, Problem 69SP
A standing 580-N woman wearing climbing boots is to be pulled at a constant speed
by a horizontal force along a flat horizontal rock surface. What force will be
necessary? [Hint: Use Table 3-1.]
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A 5.0-kg crate is on an incline that makes an angle 30° with the horizontal. If the coefficient of static friction is 0.5, the maximum
force that can be applied parallel to the plane without moving the crate is:
(А) 3.3 N
(в) 21 N
C) 46 N
D) 55 N
The resultant of the three forces is the force R=-220j kN acting through point B. Determine P1, P2, and P3.
A 1,200-N crate is being pushed across a level floor at a constant speed by a force F of 310 N at an angle of 20.0° below the horizontal, as shown in the figure a below.
20.0°
<--120.0°
(a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.)
0.222
(b) If the 310-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in the figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the
same as that found in part (a).
|m/s2
Chapter 3 Solutions
Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
Ch. 3 - 3.42 [I] Two forces act on a point object as...Ch. 3 - 3.43 [I] Compute algebraically the resultant of...Ch. 3 - 3.44 [I] Two forces, 80 N and 100 N, acting at...Ch. 3 - 3.45 [I] Find algebraically the (a) resultant...Ch. 3 - 3.46 [I] Having hauled it to the top of a...Ch. 3 - 3.47 [II] Repeat Problem 3.46 if the handle is...Ch. 3 - 3.48 [I] A force of 100 lb acting on a body...Ch. 3 - 3.49 [I] An unknown force acting on a 50.0-g...Ch. 3 - 3.50 [I] Once ignited, a small rocket motor on a...Ch. 3 - 3.51 [II] Typically, a bullet leaves a standard...
Ch. 3 - 3.52 [I] A force acts on a 2-kg mass and gives...Ch. 3 - 3.53 [I] An object has a mass of 300 g. (a)...Ch. 3 - 3.54 [I] A horizontal cable pulls a 200-kg cart...Ch. 3 - 3.55 [II] A 900-kg car is going 20 m/s along a...Ch. 3 - 3.56 [II] A 12.0-g bullet is accelerated from rest...Ch. 3 - 3.57 [II] A 20-kg crate hangs at the end of a long...Ch. 3 - 3.58 [II] A 5.0-kg mass hangs at the end of a...Ch. 3 - 3.59 [II] A 700-N man stands on a scale on the...Ch. 3 - 3.60 [II] Using the scale described in Problem...Ch. 3 - 3.61 [II] A cord passing over a frictionless,...Ch. 3 - 3.62 [II] An elevator starts from rest with a...Ch. 3 - 3.63 [II] Just as her parachute opens, a 60-kg...Ch. 3 - 3.64 [II] A 300-g mass hangs at the end of a...Ch. 3 - 3.65 [II] A 20-kg wagon is pulled along the level...Ch. 3 - 3.66 [II] A 12-kg box is released from the top of...Ch. 3 - 3.67 [I] A wooden crate weighing 1000 N is at...Ch. 3 - 3.68 [I] Someone wearing rubber-soled shoes is...Ch. 3 - 3.69 [I] A standing 580-N woman wearing climbing...Ch. 3 - 3.70 [II] For the situation outlined in Problem...Ch. 3 - 3.71 [II] An inclined plane makes an angle of ...Ch. 3 - 3.72 [II] A horizontal force F is exerted on a...Ch. 3 - 3.73 [II] An inclined plane making an angle of ...Ch. 3 - 3.74 [III] Repeat Problem 3.73 if the coefficient...Ch. 3 - 3.75 [III] A horizontal force of 200 N is required...Ch. 3 - 3.76 [II] Find the acceleration of the blocks in...Ch. 3 - 3.77 [III] Repeat Problem 3.76 if the coefficient...Ch. 3 - 3.78 [III] How large a force F is needed in Fig....Ch. 3 - 3.79 [III] In Fig. 3-28, how large a force F is...Ch. 3 - 3.80 [III] (a) What is the smallest force parallel...Ch. 3 - 3.81 [III] A 5.0-kg block rests on a incline. The...Ch. 3 - 3.82 [III] Three blocks with masses 6.0 kg, 9.0...Ch. 3 - 3.83 [I] Floating in space far from anything...Ch. 3 - 3.84 [I] Two cannonballs that each weigh 4.00...Ch. 3 - 3.85 [I] Imagine a planet and its moon...Ch. 3 - 3.86 [I] Two NASA vehicles separated by a...Ch. 3 - 3.87 [I] Suppose you are designing a small,...Ch. 3 - Prob. 88SPCh. 3 - Prob. 89SPCh. 3 - 3.90 [II] A space station that weighs 10.0 MN on...Ch. 3 - 3.91 [II] An object that weighs 2700 N on the...Ch. 3 - 3.92 [II] Imagine a planet having a mass twice...Ch. 3 - 3.93 [II] The Earth’s radius is about 6370 km. An...Ch. 3 - 3.94 [II] A man who weighs 1000 N on Earth stands...Ch. 3 - 3.95 [II] The radius of the Earth is about 6370...Ch. 3 - 3.96 [II] The fabled planet Dune has a diameter...Ch. 3 - 3.97 [III] An astronaut weighs 480 N on Earth. She...
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- A child pulls on a wagon handle at an angle of 37 degrees above the horizontal with a force of 45 N. If the wagon accelerates at 8.1m/s^2 horizontally, what is the mass of the wagon? Assume frictional forces are negligible.arrow_forwardA person is doing leg lifts with 3.00-kg ankle weights. The lower leg itself has a mass of 5.00 kg. When the leg is held still at an angle of 30.0° with respect to the horizontal, the patellar tendon pulls on the tibia with a force of 362 N at an angle of 20.0° with respect to the lower leg. Assume the force exerted on the tibia by the femur is the only other significant force acting on the lower leg. a.)Find the magnitude of the force exerted on the tibia by the femur. b.)At what angle below the horizontal does the force exerted on the tibia by the femur act? Enter the angle in degrees where positive indicates right of the horizontal and negative indicates left of the horizontal.arrow_forwardAn 85 kg man tries to pull himself up the face of a boulder using a rope hooked to a tree above it. The face of the boulder created a 50.0° angle with the horizontal. If the coefficient of friction between his shoes and the boulder is 0.350, will he make it up if he pulls with 550. N of force? Remember his shoes will try to slip backwards when considering friction.arrow_forward
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