World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal...
World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude 15m/s^2.
How much horizontal force F must a sprinter of mass 55 kg exert on the starting blocks to produce this acceleration?
Which body exerts the force that propels the sprinter, the blocks or the sprinter?
Homework Answers
![force between sprinter fool and block, Fama=SSXIS F= 825N] The blocks propels the sprinter when sprinter sool exert egual for](http://img.homeworklib.com/questions/c8a95520-868b-11eb-9c8e-c15f872d48a1.png?x-oss-process=image/resize,w_560)
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World-class sprinters can accelerate out of the starting blocks
with an acceleration that is nearly horizontal...
World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal...
World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude 15m/s^2. How much horizontal force F must a sprinter of mass 64 kg exert on the starting blocks to produce this acceleration?
10: A powerful motorcycle can produce an acceleration of while traveling at 90.0 km/h. At that...
10: A powerful motorcycle can produce an acceleration of while traveling at 90.0 km/h. At that speed the forces resisting motion, including friction and air resistance, total 400 N. (Air resistance is analogous to air friction. It always opposes the motion of an object.) What is the magnitude of the force the motorcycle exerts backward on the ground to produce its acceleration if the mass of the motorcycle with rider is 245 kg? The powerful motorcycle, a chopper, in Problem...
10: A powerful motorcycle can produce an acceleration of while traveling at 90.0 km/h. At that...
10: A powerful motorcycle can produce an acceleration of while traveling at 90.0 km/h. At that speed the forces resisting motion, including friction and air resistance, total 400 N. (Air resistance is analogous to air friction. It always opposes the motion of an object.) What is the magnitude of the force the motorcycle exerts backward on the ground to produce its acceleration if the mass of the motorcycle with rider is 245 kg? The powerful motorcycle, a chopper, in Problem...
Problem 3 (20 points) In the following figure, a horizontal force F is applied to a...
Problem 3 (20 points) In the following figure, a horizontal force F is applied to a large block of mass M with a massless pulley attached to it. While the block M is moving to the right, the other two blocks mi and m2 remain stationary problem relative to M. All surfaces are frictionless for this (a) Draw separate free body diagrams for M(including the massless pulley), mi, and m2 respectively. On the free body diagrams, please only draw and...
3. (III) Three blocks on a frictionless horizontal surface are in contact with each other as...
3. (III) Three blocks on a frictionless horizontal surface are in contact with each other as shown in Fig. 4-54. A force F is applied to block A (mass mA). (a) Draw a free-body dia- gram for each block. Determine (b) the acceleration of the system (in terms of mA, mB, and mc), (c) the net force on each block, and (d) the force of contact that each block exerts on its neighbor. (e) If mA mB mc- F 96.0N,...
Please help this one 2. Two blocks of mass mį and m2 are stacked as shown...
Please help this one
2. Two blocks of mass mį and m2 are stacked as shown on a frictionless surface. There is friction between the blocks with static friction coefficient us. A horizontal external force F is applied to the top block. o é Draw separate free-body diagrams for both masses according to the standards presented in class. Find an expression for the maximum force F that can be applied and yet the two blocks still move together. (Hint: both...
1. A Ferris wheel has a radius of 6 m and makes one revolution in 4seconds...
1. A Ferris wheel has a radius of 6 m and makes one revolution in 4seconds (i.e. onerevolution in approximately 12.6 seconds). A person with a mass of 50 kg is sitting on one of thebenches attached to the rim. What is the normal force acting on a the person at the highest pointof the rotating Ferris wheel? Approximate the acceleration due to gravity as 10 m/s2; on a Ferriswheel, the passengers are never upside down. 2. Consider what happens...
Sample Class Problems-Force and Acceleration Prob#l: Two people are pushing a stalled car (the ma...
Sample Class Problems-Force and Acceleration Prob#l: Two people are pushing a stalled car (the mass of the car is 1850kg). One person applies a force to the car, while the other applies a force of 395N. Both forces act in the same of 560N also acts on the car, but in a direction opposite force arises because of friction and the extent to which the pavement opposes Find the acceleration of the car. direction. A third force to that in...
(10%) Problem 8: Two blocks connected by a string are pulled across a horizontal surface by...
(10%) Problem 8: Two blocks connected by a string are pulled across a horizontal surface by a force applied to one of the blocks, as shown to the right. The mass of the left block m1 = 1.3 kg and the mass of the right block m2 = 3.1 kg. The angle between the string and the horizontal is = 61° The coefficient of kinetic friction between the blocks and the surface is u= 0.22. Each block has an acceleration...
QUESTION 3 A student presses a book between his hands, as the drawing indicates. The forces...
QUESTION 3 A student presses a book between his hands, as the drawing indicates. The forces that he exerts on the front and back covers of the book are perpendicular to the book and are horizontal. The book's mass is 1.5 kg Calculate the wight of the book in N with 3 significant figures. (Assume acceleration due to gravity g 9.80 m/s, down) QUESTION 4 A student presses a book between his hands, as the drawing indicates. The forces that...
Problem 3 (20 points) In the following figure, a horizontal force F is applied to a large block of mass M with a massless pulley attached to it. While the block M is moving to the right, the other two blocks mi and m2 remain stationary problem relative to M. All surfaces are frictionless for this (a) Draw separate free body diagrams for M(including the massless pulley), mi, and m2 respectively. On the free body diagrams, please only draw and...
3. (III) Three blocks on a frictionless horizontal surface are in contact with each other as shown in Fig. 4-54. A force F is applied to block A (mass mA). (a) Draw a free-body dia- gram for each block. Determine (b) the acceleration of the system (in terms of mA, mB, and mc), (c) the net force on each block, and (d) the force of contact that each block exerts on its neighbor. (e) If mA mB mc- F 96.0N,...
Please help this one
2. Two blocks of mass mį and m2 are stacked as shown on a frictionless surface. There is friction between the blocks with static friction coefficient us. A horizontal external force F is applied to the top block. o é Draw separate free-body diagrams for both masses according to the standards presented in class. Find an expression for the maximum force F that can be applied and yet the two blocks still move together. (Hint: both...
Sample Class Problems-Force and Acceleration Prob#l: Two people are pushing a stalled car (the mass of the car is 1850kg). One person applies a force to the car, while the other applies a force of 395N. Both forces act in the same of 560N also acts on the car, but in a direction opposite force arises because of friction and the extent to which the pavement opposes Find the acceleration of the car. direction. A third force to that in...
(10%) Problem 8: Two blocks connected by a string are pulled across a horizontal surface by a force applied to one of the blocks, as shown to the right. The mass of the left block m1 = 1.3 kg and the mass of the right block m2 = 3.1 kg. The angle between the string and the horizontal is = 61° The coefficient of kinetic friction between the blocks and the surface is u= 0.22. Each block has an acceleration...
QUESTION 3 A student presses a book between his hands, as the drawing indicates. The forces that he exerts on the front and back covers of the book are perpendicular to the book and are horizontal. The book's mass is 1.5 kg Calculate the wight of the book in N with 3 significant figures. (Assume acceleration due to gravity g 9.80 m/s, down) QUESTION 4 A student presses a book between his hands, as the drawing indicates. The forces that...
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