A football player of height h is subjected to a horizontal push at his shoulders, which are a distance h/4 from his center of mass, which in turn is a distance 5h/8 from his feet (see Figure). To counteract the push he leans forward at an angle 0 to the vertical. The coefficient of static friction between the player's feet and the pitch is µ. Find the minimum angle 0, of lean such

A football player of height h is subjected to a horizontal push at his shoulders, which are a distance h/4 from his center of mass, which in turn is a distance 5h/8 from his feet (see Figure). To counteract the push he leans forward at an angle 0 to the vertical. The coefficient of static friction between the player's feet and the pitch is µ. Find the minimum angle 0, of lean such

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A block with a mass m = 10kg is sitting on an inclined plane witn an angle of 30 degrees. The block is connectec to a wall by a wire which has tension so that the block is stationary. The coefficient of static friction between the block and the plans is 0.2. Calculate tension
A trampoline with a 10-foot diameter circular mat has 50 springs equally spaced around itscircumference. If a 110 lb. girl produces a downward force of 250 lbs at the bottom of her jump(when the springs are stretched the most) causing the springs to angle down at 5°, then whatis the average force in each spring? Assume that she lands in the center of the mat and that50 separate but equal forces act to support the girl’s peak impact force.
Body U with mass 5m is stacked on the top body W withmass m, and released. The bodies are in contact along thefrictionless interface at 45 to the vertical. The body U isin contact with the frictionless vertical wall. Body W lieson the floor with coefficient of friction u. Relevantdimensions are shown in the figure. Express the results interms of given quantities: m, g, h and u. Let u =1/5. In initial configuration (shown), the velocities are zero. Find thefrictional force with the ground during the motion while the two bodies are in contact. Let u = 1/5. In initial configuration (shown), the velocities are zero. Find thevelocities (direction and magnitude) of U and W at the instant when they separate (i.e., when the point C of U coincides with point D of W). Please use work-energy principle.
A 1.70 kg box rests on a plank that is inclined ut an angle of 63.0° above the horizontal. The upper end of the box isattached to a spring with a force constant of 16.0 N/m, as shown in the figure. If the coefficient of static friction betweenthe box and the plank is 0.26, what is the maximum amount the spring can be stretched and the box remain at rest?
b esc Mock A block of mass 4.55 kg is pushed up against a wall by a force P that makes an angle of 0 = 50.0° angle with the horizontal as shown below. The coefficient of static friction between the block and the wall is 0.222. fn 71°F Synny A (a) Determine the possible values for the magnitude of P that allow the block to remain stationary. (If there is no maximum, enter NONE in that answer blank.) x = 40.52 IP max your response differs from the correct answer by more than 10%. Double check your calculations. N JUE = 40.52 IP min! Your response differs from the correct answer by (b) What happens if IPI has a larger value than IPmax!? The block slides up the wall. O The block does not slide along the wall. O The block slides down the wall. A What happens if IP has a smaller value than IPmin!? O The block slides up the wall. O The block does not slide along the wall. The block slides down the wall. الـعـال Z spiron 15 3000 F2 W S X alt Jo # 3 n E D D-II $ 4 C 14 R F % 5 V T more than…
A circular level table 1.2 m in diameter and has a weight of 750 N is supported on three equally spaced vertical legs at A, B and C. Compute the reaction on leg at A if a vertical load of 900 N is placed at D which is 0.3 m from A towards the center of the table.
The overhanging beam is supported by a pin at A and the two-force strut BC. Determine the horizontal and vertical components of reaction at A and the magnitude of the reaction at B on the beam.
Body U with mass 5m is stacked on the top body W withmass m, and released. The bodies are in contact along thefrictionless interface at 45 to the vertical. The body U isin contact with the frictionless vertical wall. Body W lieson the floor with coefficient of friction u. Relevantdimensions are shown in the figure. Express the results interms of given quantities: m, g, h and u. Body U must stay in contact with the wall. Using the equations of motion for the two bodies compute the accelerations during the motion while in contact.
A 1.5 kg block resting ina rough flat surface is pulled by a string. The string makes an angle of 20 degress with the horizontal. The coefficient of static friction between the blodk and the surface is 0.35. What is the maximum tension in the string to keep the block unmoved?
Because of long-tem loading from the 900-N tension in the power line, the uniform utility pole has developed a lean. If the mass per unit length of the 9 m pole is 24 kg'm and the mass of the lamp fixture is negligible, determine the reactions at the ground support A. Pwer lne Vertical
Assume that the coefficient of friction at the top and bottom surfaces of a box of mass 700 g is one. If a = 135 cm / s and F = 1.9N, what is the coefficient of friction?
Questions-Problems-on-NLM.pd x Assignment_NLM.pdf O File C:/Users/Lenovo/Downloads/Assignment_NLM.pdf Sign in A) Read aloud V Draw F Highlight O Erase 4 of 6 (3) a) Find the acceleration of the blocks if the surface is a 2.2 kg frictionless. b) Find the coefficient of minimum ееp the system in equilibrium. friction needed to 1.5 kga 1:56 PM