The two systems shown start from rest. On the left, two 200-N weights are connected by an inextensible cord, and on the right, a constant 200-N force pulls on the cord. Neglecting all frictional forces, which of the following statements is true?

The two systems shown start from rest. On the left, two 200-N weights are connected by an inextensible cord, and on the right, a constant 200-N force pulls on the cord. Neglecting all frictional forces, which of the following statements is true?

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

Starting at time t = 0, net force F1 is applied to an object that is initially at rest. (a) If the force remains constant with magnitude F1 while the object moves a distance d, the final speed of the object is v1. What is the final speed v2 (in terms of v1) if the net force is F2 = 2F1 and the object moves the same distance d while the force is being applied? (b) If the force F1 remains constant while it is applied for a time T, the final speed of the object is v1. What is the final speed v2 (in terms of v1) if the applied force is F2 = 2F1 and is constant while it is applied for the same time T? In a later chapter we’ll call force times distance work and force times time impulse and associate work and impulse with the change in speed.)
Human centrifuges are often used to simulate different acceleration levels for pilots. When aerospace physiologists say that a pilot is pulling 9 g,s , they mean that the resultant normal force on the pilot from the bottom of the seat is nine times their weight. Knowing that the centrifuge starts from rest and has a constant angular acceleration of 1.5 RPM per second until the pilot is pulling 9 g's and then continues with a constant angular velocity, determine (a) how long it will take for the pilot to reach 9 g's (b) the angle 0 of the normal force once the pilot reaches 9 g’s. Assume that the force parallel to the seat is zero.
By using a forked rod, a smooth cylinder C having a mass of 0.5 kg is forced to move along the vertical slotted path (r = 0.4 θ) m, where θ is in radians. If the angular position of the arm is θ = (0.3 t3 ) rad, where t is in seconds. The cylinder is in contact with only one edge of the rod and slot at any instant. Find "the force of the rod on the cylinder at the instant t=2s" Find "the normal force of the slot at the instant t=2s" Find the "radius of curvature at t=2s" Find the "ψ angle at t=2s"
As indicated in the illustration, two blocks are connected by an inextensible cable. Block A weighs 178.6 kg, while B weighs 252 kg. If the system is released from rest, calculate the acceleration (in m/s2) of block B. For simplicity, let us suppose that the coefficient of friction between block A and the plane is μk = 0.24 and that the pulley is both weightless and frictionless. Make use of the formula g = 9.81 m/s2.
1000-lb boulder B is resting on a 200-lb platform A when truck C accelerates to the left with a constant acceleration. Which of the following statements are true (more than one may be true)?a. The tension in the cord connected to the truck is 200 lb.b. The tension in the cord connected to the truck is 1200 lb.c. The tension in the cord connected to the truck is greater than 1200 lb.d. The normal force between A and B is 1000 lb.e. The normal force between A and B is 1200 lb.f. None of the above are true.
A 1000-lb boulder B is resting on a 200-lb platform A when truck C accelerates to the left with a constant acceleration. Which of the following statements are true (more than one may be true)? a.) The tension in the cord connected to the truck is 200Nb.) The tension in the cord connected to the truck is1200Nc.) The tension in the cord connected to the truck is greater than 1200Nd.) The normal force between A and B is 1000Ne.) The normal force between A and B is 1200Nf.) none of the above
It is known that the mass of the 1,2,3 block is the same, which is 2 kg. The mass of block 4 is equal to the mass of block 5. The system is at rest. Neglect the masses of all ropes, Springs, and pulleys. If the magnitude of the acceleration due to gravity. g= 10 m/s², determine: a. Rope tension I b. Rope tension 3 c. The forces acting lincluding direction and magnitude) on blocks 2 and 3 as I unit ( two blocks are seen as 1 point object) d. Acceleration of block 4 when rope 3 is cut e. The force acting on block 3 if rope 2 is cut
Two balls with identical masses of (2 kg) and radii of (0.5 meters) start at rest at the top of a plane that is (15 meters) long and inclined to the horizontal by an angle of (25 degrees). Ball 1 will slide down the plane without friction. Ball 2 will roll down the plane without slipping. (a) Which ball gets to the bottom of the plane first? (b) By how long does the winning ball beat the losing ball? (c) What is the linear speed of each ball when it arrives at the bottom of the plane?
A block A of 60.0 lb is connected to a block B of 10.0 lb by means of a rope and an ideal pulley. The system is released from rest. Between block A and the surface, there is a coefficient of kinetic friction of 0.10. Block A has descended 5.00 ft. At this moment, determine: a. The displacement of block B.b. The magnitude of the tension in the rope.c. The speed of block B.d. The speed of block A.
A motorcycle starts from rest at t=0 and moves along a circular track with a radius of 400 m. The tangential component of its acceleration is at= 2 m/s2. When the magnitude of its total acceleration reaches 5 m/s2, friction can no longer keep the motorcycle on the circular track, and it spins out. Can the motorcycle complete one quarter of a lap of the track before it spins out? Justify your answer with relevant calculations.
The radius of a highway curve is 120m, and has an angle of 9.31 from the horizontal. The center of gravity of the car is located 0.80m above the roadway and the distance between the two front wheels is 1.2m. if the car has a total weight of 15KN, a. Determine the normal acceleration (m/s2) and the velocity (in kph) of the car before overturning? Assume that friction is great enough to prevent sliding. b. Find the maximum velocity of the car could move in the curve so that there will be no pressure between the tires and the roadway, kph. c. What is the velocity of the car to prevent sliding up if the coefficient of kinetic friction is 0.60?
Both systems shown have massless and frictionless pulleys. On the left, a 10 N weight and a 50 N weight are connected by an inextensible rope. On the right, a constant 50 N force pulls on the rope. Which of the following statements is true immediately after unlocking the pulleys? The 10 N block on the left will have the larger upward acceleration. In both cases, the acceleration of the 10 N blocks will be equal to zero. In both cases, the 10 N block will have the same upward acceleration. The tension in the rope on the left system is 40 N. The 10 N block on the right will have the larger upward acceleration.