Lifting a 3m Beam: Calculating Force, Friction, & Net Force
2016年7月18日 · A construction worker attempts to lift a uniform beam off the floor and raise it to a vertical position. The beam is 3.00 m long and weighs 372 N. At a certain instant, the worker holds the beam momentarily at rest with one end at distance d = 1.50 m above the floor by exerting a force F on the beam, perpendicular to the beam.
Construction Worker Lifting Uniform Beam - Physics Forums
2014年11月14日 · A construction worker attempts to lift a uniform beam off the floor and raise it to a vertical position. The beam is 2.26 m long and weighs 397 N. At a certain instant the worker holds the beam momentarily at rest with one end a distance d = 1.21 m above the floor, as shown in the figure, by exerting a force on the beam.
What is the torque on the bolt due to the worker and ... - Physics …
2018年11月23日 · The magnitude of the torque around the bolt due to the worker and the weight of the beam is calculated by summing the torques around the bolt and considering the beam's mass to be located at its center. The total torque is 8820N*m, with 2469.6N*m coming from the worker and 6350.4N*m from the beam. The correct mass of the beam is 500kg.
Statics Problem - Moment on a Bridge - Physics Forums
2009年9月5日 · Homework Statement The uniform work platform, which has a mass per unit length of 28kg/m, is simply supported by cross rods A and B the 90-kg construction worker starts from point B and walks to the right. At what location S will the combined moment of the weights of the man and platform...
Torque on a Massful Beam with Load - Physics Forums
2007年4月22日 · In summary, the question involves calculating the magnitude of torque on a steel beam with a length of 2.90m and mass of 390kg, with a construction worker weighing 71kg standing at the far end. Using the equation Torque = mgl, it is important to consider the center of gravity and draw a free-body diagram to correctly express the net torque ...
Gravitational Torque HW: M1,M2,X1,X2,g | Calculate T - Physics …
2011年4月2日 · A 4.0m long, 500kg steel beam extends horizontally from where it has been bolted to the framework of a new building under construction. A 70kg construction worker stands at the far end of the beam. What is the magnitude of the torque about the point where the beam is bolted in place? M1 = 500kg M2= 570kg X1 = 0m X2 = 4m g = 9.8 m/s 2 Homework ...
Tension in a cable supporting a beam - Physics Forums
2007年10月19日 · An 88kg construction worker sits down 2.0 m from the end of a 1430 kg steel beam to eat his lunch. The cable supporting the beam is rated at 15,000 N. Should the worker be worried? To answer this, determine the tension in the cable. Homework Equations The Attempt at a Solution First, I have no idea how to start this problem.
Why Does the Tension in the Cable Change Above and Below the …
2007年9月9日 · A cable is lifting a construction worker and a crate, as the drawing shows. The weights of the worker and crate are 921 N and 1330 N, respectively. The acceleration of the cable is 0.620 m/s2, upward. What is the tension in the cable (a) below the worker and (b) above the worker? Homework Equations F=ma. The Attempt at a Solution
Help rearranging this equation. - Physics Forums
2009年1月22日 · In summary, the conversation is about a construction site where a uniform steel beam is suspended and swinging back and forth with a period of 5.00 seconds. The question is asking for the length of the beam, and the person is having trouble rearranging the equation to solve for length. They have attempted to rearrange it and are seeking help.
How Does the Cross Product Help Calculate Tension in a Cable?
2004年11月18日 · In summary, the tension in the supporting cable for a horizontal boom supporting a sign weighing 150 N and a uniform construction weighing 50 N can be found using the cross product method and is equal to 350 N. However, in order to accurately determine the tension, the angle of the cable from the horizontal is necessary.