A person bends forward to lift a load with his back. To see that this is not a good way to lift, we will find the large induced force  R = Rx(i) + Ry(j) occurring in the spine by lifting a 200-N object. The spine and the upper body are represented as a uniform horizontal rod of weight 350 N, pivoted at the base of the spine. The erector spinalis muscle, attached at a point 2/3 of the way up the spine, maintains the position of the back with tension T. The angle between the spine and this muscle theta = 12 degrees.   Find the magnitude of force R at the base of the spine.

Q: Please help me thank you very much! Find the location of nodes for the rotational wavefunction with…

A: Given: l=2 and ml=0 To find the node we need to compute the probability density equlas to zero…

Q: A mass m hangs from a string wrapped around a pulley of radius r. The pulley has a moment of inertia…

A:

Q: A small sphere of mass m and radius r starts from rest at height h and rolls without slipping along…

A: Given : h = 3R I = 2mr2/5

Q: Allow M to be mass of a rod and let L be the length. Solve the given problem. Given: Part A) Let's…

A: Given data: The mass of rod is M. The length of rod is L.

Q: An Annular ring with a mass of 2.93 kg, an innner rdius of 15.8cm, and an outer rdius of 34.2 cm is…

A: The objective of the question is to find the increase in kinetic energy of the annular ring when a…

Q: Rewrite the conservation of energy equation,mgyi = ½ mvf^2 + ½ Iωf^2, so that it uses the…

A:

Q: A triangular rod of length L and mass M has a nonuniform linear mass density given by the equation…

A: Given Data: Let us consider the given triangular rod of length L and mass M has a nonuniform linear…

Q: A uniform, 0.0350 kg rod of length 0.350 m rotates in a horizontal plane about a fixed axis through…

A: A uniform of rod of mass: mr = 0.035 kg Length of rod: L = 0.350 m Two small rings each of mass: msr…

Q: A uniform, 1.0 m radius, 50.0 kg circular wheel (ICM=M R2) spinning at 120 rev/min is subjected to a…

A:

Q: A wagon wheel with spokes is mounted on a vertical axis so it is free to rotate in the horizontal…

A: Given Angular speed (ω)          = 3.0 rad/s Velocity (v)                      = 0.5 cm/s…

Q: A uniform rod of mass M and length L is held vertically by two strings of negligible mass, as shown…

A:

Q: A thin uniform rod of mass M and length L is nailed to the tabletop in an experiment on rotation. If…

A:

Q: A light bar can rotate around the pivot point O. The mass m1=  0.98 kg is suspended at a distance OA…

A:

Q: A uniform solid disk with radius 11 cm has mass 0.5 kg (moment of inertia I = ½MR2). A constant…

A: a)The of the angular momentum about the center of the disk is,

Q: The figure below shows a cylinder of radius 20 cm and mass 10 kg. The cylinder is pulled up by a…

A: Given that:- Mass of block=20kg

Q: During a concentric loading of the quadriceps muscle in the upper leg, an athlete extends his lower…

A:

Q: 4) If a wire in the shape of the helix: x = 2 sin t ,y = 2cos t,z= 3t; 0 < t < 2n, and the density…

A: Given: x=2sint, y=2cost, z=3t; 0≤t≤2π The density is a constant k. Introduction: Moment of inertia…

Q: An object with a mass of m = 5.10 kg is attached to the free end of a light string wrapped around a…

A:

Q: In the rigid rotor model for diatomic rotation, the degeneracy of the state labelled |JK) is OK O2K…

A:

Q: A rigid body consists of 12 identical thin rods of length a, forming the edges of a cube. Each of…

A: To find the moment of inertia tensor of the rigid body, we need to consider each of the three…

Q: As shown in the figure, the member is anchored at A and section AB lies in the x-y plane. The…

A: in this question we determine  fisrt unit vector or AB becuse we will found moment about segment AB.…

Q: The rotor of an electric motor is rotating with an angular speed of 960 rev/min. A second rotor is…

A: Given  Initial angular speed ωi=960 rev/min I2=2I1

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.