Q5. As shown in the image below, two objects, A and B, are connected using the cable and pulley system. (The cable and pulley system is friction-less and weight-less.) If at this moment the velocity of object B is downward 2.0 m/s, determine the velocity of object A at this moment. In this problem, downward motion is considered positive, and in your answer, negative sign must be included if the motion of A is upward. Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point, and proper Sl unit.

Q5. As shown in the image below, two objects, A and B, are connected using the cable and pulley system. (The cable and pulley system is friction-less and weight-less.) If at this moment the velocity of object B is downward 2.0 m/s, determine the velocity of object A at this moment. In this problem, downward motion is considered positive, and in your answer, negative sign must be included if the motion of A is upward. Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point, and proper Sl unit.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter1: Introduction To Statics

Section: Chapter Questions

Problem 1.47P: A rifle at A is fired at a target at B. If the speed of the bullet is 1400 ft/s, determine the...

See similar textbooks

Similar questions

Using an appropriate method, predict the velocity of block B after block A has moved 2 m. Furthermore, find the tension in the cable. Take matrix no 9 from the table
The figure depicts two pucks on a frictionless table. Puck 2 is four times as massive as puck 1. Starting from rest, the pucks are pushed by two equal forces. 1-Which pucks will have the grater kinetic energy upon reaching the finish line? 2- Which puck will reach the finish time first ?
A boat is towed at the rate of 12mi/hr. At t = 0, the towing line is cast off and a man in the boat begins to row in the direction of motion exerting force of 20 lb. The combined weight of the man and the boat is 480lb. The water resists the motion with a force equal to 1.7v lb, where v is the velocity of the boat in feet per second. Derive a DE leading the velocity of the boat.
A body above the surface of the earth is pulled toward the center of the earth with a forceproportional to the reciprocal of the square of the distance of the body from the center. If the radiusof the earth is 6375 km, find the velocity of the body as it strikes the surface of the earth if it fallsfrom rest at a distance four times the earth’s radius measured from the center of the earth. What isthe velocity if it falls from an infinite distance?
A 5-ton spacecraft is running low on fuel and the spacecraft's propulsion force is given by F=5000−2x (The instant the force reaches zero, the fuel runs out and the force is forever zero.) Assuming that the change in the ship's mass due to fuel loss is negligible, determine: a) Graph the force versus position and tell where the fuel ends. b) How much energy was available in the fuel? c) If the ship starts from rest, what is the fastest speed the ship can reach?
When a volleyball coach releases a volleyball from a height of 2 m above the gym floor, it falls to the floor and bounces back to two-thirds the same height. When it is in contact with the floor, the lower side of the ball is temporarily flattened. Suppose the maximum depth of the dent is 1 cm. (Assume the positive direction is upward.)1. Determine the acceleration of the ball (in m/s2) while it is in contact with the floor and compressing. (Indicate the direction with the sign of your answer.) 2. Determine the velocity of the ball (in m/s) as it leaves the floor on the rebound. (Indicate the direction with the sign of your answer.) 3. What If? If instead of dropping the ball, the coach throws it down (from some unknown height) with such a speed that it bounces back up to a height three times its original height, determine the new acceleration of the ball (in m/s2) while in contact with the floor and expanding. (Indicate the direction with the sign of your answer.)
A mass-spring system is initially compressed towards a wall and hold in equilibrium withthe help of a forceF. At timet=0sec, the force Fis suddenly released. The mass-spring system then reaches a velocityvwhile sliding on the frictionless surface. (a) Is the linear momentum conserved? (b) Calculate the average force exerted by the wall on the mass-spring system after theforceFis released, assuming that the spring remains in contact with the wall for a shorttimeΔt. Express your answerin terms of k,m,Δt and F.
Dynamic Lesson: 5 grams of marble balls are first dropped from point A without speed and fall into the box at point C through the AB tube.a) Determine the distance Rb) Find the velocity of the balls when they fell into C box.[g = 9.81 m / s2, neglect the dimensions of the box]
4-The 20-g bullet is fired horizontally at 1400 m/s into the 350-g block resting on a smooth surface. If the bullet becomes embedded in the block, what is the velocity of the block immediately after impact
3) An unknown mass m is attached to two identical springs. Each spring has a stiffness k = 10 N/m and an unstretched length of 3 m. The unknown mass is released from rest when the springs are horizontal and unstretched. The mass reaches its maximum velocity after falling 4 m. a) What is the acceleration on the mass when it is at the maximum velocity? b) Determine the mass of the unknown mass. c) Use work-energy to find the maximum velocity.
16- A helicopter with a mass of 72kg is towed by a rope 15m perpendicularly from the ocean surface. The pilot's acceleration is g/10. What is the work (J) done on the pilot by the force exerted by the helicopter? (g=9.80m/s2)
A football player hits a 180 g ball moving horizontally to the left with a speed of 6 m/s, as shown in the figure. The speed of the ball immediately after the kick is 25 m/s at an angle of 20° to the horizontal. If the ball is in contact with the foot for 0.04 s, find the force exerted on the ball by the foot and the angle it makes with the horizontal.