Consider a rigid steel beam of length L = 14 m and mass mb = 405 kg resting on two supports, one at each end. A worker of mass mw = 68 kg sits on the beam at a distance x from support A. Refer to the figure, though note that it is not drawn to scale. a. When the worker sits at a distance x = 7.5 m from support A, calculate the force, in newtons, that support B must exert on the beam in order for it to remain at rest. Use g with three significant figures. b. The force exerted on the beam by support A is measured and found to be FA = 2240 N. At what distance x, in meters
Rotational Equilibrium And Rotational Dynamics
In physics, the state of balance between the forces and the dynamics of motion is called the equilibrium state. The balance between various forces acting on a system in a rotational motion is called rotational equilibrium or rotational dynamics.
Equilibrium of Forces
The tension created on one body during push or pull is known as force.
Consider a rigid steel beam of length L = 14 m and mass mb = 405 kg resting on two supports, one at each end. A worker of mass mw = 68 kg sits on the beam at a distance x from support A. Refer to the figure, though note that it is not drawn to scale.
a. When the worker sits at a distance x = 7.5 m from support A, calculate the force, in newtons, that support B must exert on the beam in order for it to remain at rest. Use g with three significant figures.
b. The force exerted on the beam by support A is measured and found to be FA = 2240 N. At what distance x, in meters, from support A is the worker sitting now?
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Part B is wrong
FA=(2mw(L−x)+mbL)g/2L is the formula but I'm unsure which numbers to plug in where.
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