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A weightlifter stands up at constant speed from a squatting position while holding a heavy barbell across his shoulders.
1- Draw a free-body diagram for the barbells.
2- Draw a free-body diagram for the weight lifter.
A 28.0 {rm kg} child plays on a swing having support ropes that are 2.20 {rm m} long. A friend pulls her back until the ropes are 45.0^circ from the vertical and releases her from rest.
Another particle, of mass 7.4 10-27 kg, moves along the positive x-axis with a speed of 4.0 106 m/s. (Assume that mass is conserved.) Evaluate the third particle's speed. What is the direction of motion?
An Atwood machine consists of two masses, = 6.5 and = 8.5 , linked by a cord that passes over a pulley free to rotate about a fixed axis. The pulley is a solid cylinder of radius = 0.40 and mass 0.80 .
Modeling the optical trap as a Hookean spring, evaluate the trap stiffness using the Boltzmann distribution. Determine the sphere diameter by comparing the Stokes drag and the tweezer force that balances the drag.
A 12-inch cast iron water pipe that has been in service for 50 years is found to have extensive corrosion inside. How these conditions would affect friction losses in the pipe describe it.
The vitreous humor, a transparent, gelatinous fluid that fills most of the eyeball, What are ranges of wavelength, frequency and speed of light
A small, plastic sphere of mass m = 111 g is attached to a string There is an electric field of 122 N/C directed along the + x axis
Plane leaves the airport in Galisto and flies a distance 180 at an angle 68 east of north and then changes direction to fly the distance 250 at an angle 48 south of east, after which it makes an immediate emergency landing in a pasture.
A compact 60.00 kg object is attached to one end of a horizontal 40kg uniform steel tube 2.40 m long. What is the distance from the loaded end to the center of gravity of object-tube system?
define the speed of the particle when the string is parallel to the electric field.
An average temperature of the rest of the universe
An 18 g rifle bullet travelling 180m/s buries itself in a 3.6kg pendulum hanging on a 2.8 m long string, which makes the pendulum swing upward in an arc. Verify the horizontal component of the pendulum's displacement.
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