The W1= 87.85-lb block shown rests on a smooth plane (coefficient of kinetic friction = 0) with an angle of 0 =28° from horizontal. It is connected by a flexible inextensible cord that passes around weightless, frictionless pulleys to a support. The W2 =109.85-lb weight is attached as shown. After the system is released from rest, in what distance will the block on the plain attain a speed of 6.7 ft/s? шш W2 W1

The W1= 87.85-lb block shown rests on a smooth plane (coefficient of kinetic friction = 0) with an angle of 0 =28° from horizontal. It is connected by a flexible inextensible cord that passes around weightless, frictionless pulleys to a support. The W2 =109.85-lb weight is attached as shown. After the system is released from rest, in what distance will the block on the plain attain a speed of 6.7 ft/s? шш W2 W1

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

(6) The 18 kg block shown in Figure 5, slides 2.5 m from rest down the 30° incline and then strikes a spring of stiffness 2700 N/m. The coefficient of friction between the block and the surface of the inclined plane is 0.2. Calculate the maximum spring compression when hit by the block. 2.5 m 18 kg 30°
A 1.6-kg sphere S is being moved in a vertical plane by a robotic arm. When the angle e is 38, the angular velocity of the arm about a horizontal axis through O is 55 deg/s clockwise and its angular acceleration is 205 deg/s² counterclockwise. In addition, the hydraulic element is being shortened at the constant rate of 440 mm/s. Determine the necessary minimum gripping force Pif the coefficient of static friction between the sphere and the gripping surfaces is 0.51. Compare Pwith the minimum gripping force P; required to hold the sphere in static equilibrium in the 38° position. 1.5 m Answers: P = i Ps= i
A spherical bowling ball with mass m = 4.6 kg and radius R = 0.105 m is thrown down the lane with an initial speed of v = 9.5 m/s. The coefficient of static friction between the ball and the ground is 0.35 and the coefficient for kinetic friction is μ = 0.3. Once the ball begins to roll without slipping it moves with a constant velocity down the lane. 1) What is the magnitude of the angular acceleration of the bowling ball as it slides down the lane? 2) What is magnitude of the linear acceleration of the bowling ball as it slides down the lane? 3) How long does it take the bowling ball to begin rolling without slipping? 4) Once it begins to roll without slipping, what is the force of friction on the ball?
1. The system below is released from rest. The ramp and flat services are frictionless and the coefficient of static friction between to the 1kg and the 20kg block is 0.2. Does the 1kg block slip? 20⁰ 100kg friction frictionless 1kg 20kg
A rectangular block of mass m is on top of a wedge-shaped block of mass M and angle θ, as shown below. All contact surfaces are frictionless. A horizontal force of magnitude F is applied to the wedge such that the rectangular block moves with the wedge and does not slide. (a) Draw free-body diagrams for each block separately in code. Indicate the direction of the acceleration for each block. Identify the forces on these diagrams that are Newton's third-law force pairs. (b) Find the magnitude of F in terms of m, M, g, and θ
The torsional spring has a stiffness of 20 N-m/rad and is undeflected when the 3-kg uniform slender bar is in an upright position. If the bar is released from rest in the horizontal position shown, find its angular velocity as it passes the vertical position. Neglect friction effects. 4 Type here to search ThinkVision K - Pan Tab Cape Look Esc Q A Z G FT W S # ONDA 3 F2 E D A $ 4 R F 5 F4 T G XCVB 8 a Y H N P6 F6 U J M F7 K ( F8 F10 F11 +Backspace Enter T F12 Shift Print Screen SysRq Insert 0.5 m Scroll Lock Delete Home Break End Page Up Page Down Naam Lock K 37°F Cloudy Home Lenovo B 20
A box with mass m = 2.75 kg rests on the top of a table. The coefficient of static friction between the box and the table is μs = 0.71 and the coefficient of kinetic friction is μk = 0.34. Write an expression for Fm the minimum force required to produce movement of the box on the top of the table. Solve numerically for the magnitude of the force Fm in Newtons. Write an expression for a, the box's acceleration, after it begins moving. (Assume the minimum force, Fm, continues to be applied.) Solve numerically for the acceleration, a in m/s2.
The delivery man is trying to push your 36-kg package, initially at rest, towards your house by applying a 140-N force P. inclined as shown, at 18 m above the floor, The coefficient of non-sliding friction between the floor and the package is 05 Immediately after the force P is applied, the refrigerator started to tip without sliding about corner O. G. 0.75 m E W. 1.5 m 1. What quantity is zero at the instant shown below? 3. Which of the following equations summing of moments about O is CORRECT and can be used to solve for the angular acceleration of the package? 24 P(1.8) + 25 P(1.5) – W (0.75) = Iga+ ma(1.25) 25 24 B. P(1.8) + 25 5 P(1.5) – W (0.75) = Iga+ ma(1.25) 24 C. 25 P(1.8) + 5 P(1.5) - W (0.75) = lga+ma(0.75) + 24 ma(1.0) 25 25 P(1.8)+P(1.5) - W (0.75) = Iga + ma(1.25) D. 25 24 4. What is the angular acceleration of the package? 5. What is the frictional force between the package and the floor? 1.8 m
The collar of 5 kg mass shown in the figure у (т) x2 2 moves on a parabolic bar on a horizontal plane. The collar has a speed of 8 m/sec when it is at point B. Determine the friction force between B the collar and the bar if the coefficient of friction is 0.25. Formula of the parabolic bar is shown in the figure. -4 4 x (т)
PROBLEM NUMBER 2 DYNAMICS THE CIRCULAR PACKAGE (B) AND THE BOX PACKAGE (A) SHOWN BELOW HAS AN IDENTICAL MASS OF 2.70 kg. IF THE COEFFICIENT OF KINETIC FRICTION BETWEEN BOX A AND THE CONTACT SURFACE IS 0.15. CALCULATE THE ACCELERATION OF BOX A IF THE CIRCULAR PACKAGE MOVES DOWN WARD A 34°
5) A block weighing 50 lb is shown on an inclined surface. The block is released from rest at the po- sition shown. The spring has a spring constant of k = 10 lb/in., and the coefficient of friction be- tween the block and the incline is 0.3. What is the maximum compression of the spring? 6) For the system in Question 5, what is the velocity of the block the moment it leaves the spring? 50 lb 10' 30° K www. Page 1 of 2