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Consider a beam that is 2 meter long and supported by a rope. It is pressed against the wall. There is no friction between the beam and the wall. If the beam has a mass of 2 kilogram and a sign with a mass of 10 kilogram is hung off of the end of the beam, can the system be in static equilibrium? Determine what is the tension in the rope? Note the angle is 30 degrees.
a 15 g lead bullet traveling at 240ms passes through a thin wall and emerges at a speed of 160ms . if the bullet
A jet engine emits sound uniformly in all directions, radiating an acoustic power of 3.89 × 102 kW, calculate the corresponding sound intensity level
The tub of a washer goes into its spin cycle, starting from rest and gaining angular speed steadily for 8.00 s, at which time it is turning at 4.00 rev/s. At this point, the person doing the laundry opens the lid, and a safety switch turns off the wa..
The lens of a camera with focal object length fo =9cm perfectly focuses the image of an object on film located adistance 14 cm away from the lens. How far did the object move
A 0.320 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a) What is the mass of the second ball? kg (b) What fraction of the original k..
The string connecting the m1 and the m2 passes over a light frictionless pulley. Find the downward acceleration of m2 mass.
A wood log with a volume of 12 ft3 is submerged in water. Calculate the buoyant force (in Newtons) acting on the log
A cylindrical fishing reel has a moment of inertia of I = 6.61E-4 kg*m2 and a radius of 3.98 cm. A friction clutch in the reel exerts a restraining torque of 1.47 N*m if a fish pulls on the line. What is the force of the fish on the line
A car rounds a curve that is banked inward. The radius of curvature of the road is R = 139, the banking angle is ? = 31°, Find the minimum speed that the car can have without slipping
If the iron core of a collapsing star initially spins with a rotational frequency of F = 6.3 s^-1 , what is the rotational frequency of the iron core
Calculate the mass of Earth from the period of the moon, T = 27.3 d; its mean orbital radius, rm = 3.84 108 m; and the known value of G
After the Sun exhausts its nuclear fuel, its ultimate fate will be to collapse to a white dwarf state. Calculate the surface free-fall acceleration
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