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The ring of negligible size is subjected to a vertical force of 200 lb. Determine the longest length l of cord AC such that the tension acting in AC is 160 lb. Also, what is the force acting in cord AB? Hint: Use the equilibrium condition to determine the required angle for attachment, then determine l using trigonometry applied to ? ABC
Question: A strangely transparent human arm is holding up a weight of mass m_w = 1.5kg. The sizes of the bones and attachment-points for the biceps muscle is shown in the figure. How much tension will the biceps muscle need to apply to the forearm..
A car owner forgets to turn off the headlights of his car while it is parked in his garage. how long will it take the battery to completely discharge
Sketch a PV diagram and find the work done by the gas during the following stages. Find the net work done during the complete cycle
Two ice skaters, Karen and David, face each other while at rest, and then push against each other\'s hands. How do their speeds compare after they push off
When a dielectric material is introduced between the plates of a parallel-plate capacitor and completely fills the space, Determine the dielectric constant of the material that was introduced
A person doing a chin-up weighs 680 N exclusive of the arms. During the first 25.0 cm of the lift, what is the person's velocity at this point
A drum of chemical waste has a lid with a radius of 35.0 cm. To open the thing, a torque of 367Nm is required. With what force must you work on the thing
An electric motor contains a 250-turn circular coil 5.8cm in diameter. If it is to develop a maximum torque of 1.6Nm at a current of 4.0 A, what should be the magnetic field strength
A warning buoy is observed to raise every 5.0 s as crests of waves pass by it. What is the period of these waves
A solid sphere of uniform density starts from rest and rolls without slipping down an inclined plane with angle θ = 30o. The sphere has mass M = 8 kg and radius R = 0.19 m . The coefficient of static friction between the sphere and the plane is μ = 0..
In February 1955, a paratrooper fell 370 m from an airplane withoutbeing able to open his chute but happened to land in snow, find the magnitude of the impulse on him from the snow
Why is the velocity larger for the bottom stream of water? On a quiet day, the atmospheric pressure results in a force of about 10,0000 N on a window pane with an area of 1 square meter. Why does this large force not shatter the window
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