An elevator lifted eight 70 kg passenger from first floor to 2nd floor of the building with a force of F=(15+2s²) KN. If the elevator carriage has a mass of 1 ton. Determine the speed that the passenger will be thrown upwards when it rises at s = 3.66 meters. Determine the time it takes for the elevator to rise at that position from rest.

An elevator lifted eight 70 kg passenger from first floor to 2nd floor of the building with a force of F=(15+2s²) KN. If the elevator carriage has a mass of 1 ton. Determine the speed that the passenger will be thrown upwards when it rises at s = 3.66 meters. Determine the time it takes for the elevator to rise at that position from rest.

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

Using a forked rod, a smooth cylinder P, having a mass of 0.4 kg, is forced to move along the vertical slotted path r- (0.60) m, where e is in radians. If the cylinder has a constant speed of te- 2 m/s, determine the force of the rod and the normal force of the slot on the cylinder at the instant e- rad. Assume the cylinder is in contact with only one edge of the rod and slot at any instant. Hint To obtain the time derivatives necessary to compute the cylinder's acceleration components a, and a, take the first and second time derivatives of r- 0.60. Then, for further information, use Eq. 12-26 to determine 8. Also, take the time derivative of Eq. 12-26, noting that te - 0, to determine 8. -060
The 5.27 kg collar B rests on the frictionless arm AA! The collar is held in place by the rope attached to drum D and rotates about O in a horizontal plane. The linear velocity of the collar B is increasing according to v = 0.2 t2 where v is in m/s and tis in seconds. Find the tension in the rope and the force of the bar on .the collar if 5 s,r= 0.558 m and 0 = 58° A A' D
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?
The slotted arm OA rotates about a fixed axis through O. At the instant under consideration, 0-28%, 0-55 deg/s, and 0 - 10 deg/s². Determine the magnited of the force F applied by arm OA and the magnitude of the force N applied by the sides of the slot to the 0.5-kg slider B. Neglect all friction, and let L -0.75 m. The motion occurs in a vertical plane. Answers: F- N- i i 6 -L m N N B 71°
A 75-kg man stands on a spring scale in an elevator. During the first 3 seconds of motion from rest, the tension T in the hoisting cable is 8300 N. Find the reading R of the scale in newtons during this interval and the upward velocity v of the elevator at the end of the 3 seconds. The total mass of the elevator, man, and scale is 750 kg.
A small inspection car that is being used to inspect ski lifts cables has a mass of 150 kg. It runs on ski lift cable, which makes an angle of 35oto the horizontal. The car is controlled by the attached horizontal cable under a tension of P = 2 kN. Determine the acceleration of the car and the total force exerted by the supporting cable on the wheels.
8. The toy plane has the three forces shown acting on it and is constrained by the wire to travel in a horizontal circle. The wire has length Wire 55 m and the speed of the plane is 28 m/s. If the mass of the plane is 0.65 kg and 0=18° find the tension in the wire. of airplane lift 0i mg
A cart has a mass of 1.5 kg. It is given some initial push toward a sensor and is slowed by a hanging mass which makes the cart turn around and speed up as it returns to its original position. This situation is illustrated in the attached image. If the acceleration towards the sensor is 0.5 m/s2 and the accaleration away from the sensor is 0.15 m/s2, a. draw the free body diagrams for the cart moving towards the sensor and away from the sensor. b. Write Newton's law for both situations and solve for the frictional force and for the force from the hanging mass.
A spring having original length of L1 is constricted by the 4 cords having length of L2. So, those cords keep spring compressed when there is nothing on the platform. Box having mass of m is placed on the platform, at the same time pushing platform further down by L3 meters. Afterwards, the platform is released from rest. Determine the height h the box rises in the air. Stiffness of spring is K=150 N/m. neglect the mass of the platform and the cords.
The constant vertical force P is applied to the end of the rope that passes over a peg attached to the 0.2-kg block. Neglecting friction, determine P that would cause the block to accelerate at 1.5 m/s? (a) up the inclined plane; and (b) down the inclined plane.
The 1600 kg car has a velocity of v the driver sees an obstacle 175 m away, in front of the car. It takes 0.8 s for him to react and lock the brake 100 km/h when causing the car to skid. The coefficient of kinetic friction between the tires and the road is p = 0.25. Find the best correct statement(s) from the following for this situation: ,= 100 km/h Select one or more: Work done by the frictionis equal to 617.4 KW The working forces are ficion and the wejght. The car will stop just in front of the pbstacle without hittungui The car will hit the obstadle. The car skid for the distance of 157.34m,
The 20-kg crate is stationary at time t = 0. It is subjected to a horizontal force given as a function of time (in newtons) by F = 10 + 2t. Determine how fast the crate is moving at t = 4 s. F Select one: C VEEREELARTATS a. 2.13 m/s. b. 4.13 m/s. c. 5.13 m/s. d. 3.13 m/s. N