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In exercise physiology studies, it is sometimes important to determine the location of a person's center of mass. This determination can be done with the arrangement shown in the figure below. A light plank rests on two scales, which read Fg1 = 375 N and Fg2 = 315 N. A distance of 1.65 m separates the scales. How far from the woman's feet is her center of mass?
A negative charge (-q) with a mass of 0.29 kg is dangling vertically on a string. Directly below this charge, is a charge with same amount of charge, but with the opposite sign (+q). When it is located 22.74 cm below the charge on the string, the ..
Compute the number of g's a person would experience if she could stand on the equator of Jupiter. Use following astronomical data for Jupiter: mass = 1.9 multiplied by 1024 kg, equatorial radius = 7.10 multiplied by 104 km, rotation period 9 hr 55 mi..
a physical pendulum consists of a uniform solid disk (of radius R = 54.9 cm) supported in a vertical plane by a pivot located a distance d = 21.1 cm from the center of the disk. What is the period of the resulting simple harmonic motion
question1a rigid uniform horizontal bar of mass m1 80.00 kg and length l 5.200 m is supported by two vertical mass
An auto goes from 0 to 30 m/s in 5 s, at a uniform rate of acceleration. The radius of the auto's tires is .33 m. How many revolutions per second are the tires making
If you were to send a beam of laser light to a space station above an atmosphere and just above the horizon, would you aim the laser above, below or at the visible space station.
In an experimental set-up, where a wire with a linear mass density of 1 g/m was clamped at one end, at what frequency would you need to vibrate the wire
Then find the force between them as a function of distance h. describe why the sign of the force does (or does not) make sense to you.
A large boat with a weight of 70000 tons moves at constant speed due west. What is the net force on the boat.
Two small spheres, each with mass m = 3.1 g and charge q, are suspended from a point by threads of length L = 0.23 m
What is the attractive force between the protons. A rocket rises vertically, from rest, with the acceleration of 3.0 m/s2 until it runs out of fuel at an altitude of 1100 m. After this point, its acceleration is that of gravity, downward.
A crane is required to pull up a load of building supplies from the ground to a height of 90 m at a constant velocity. Find the power output required of the motor that pulls the cable up
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