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A uniform boom is at an angle of 45 degrees from the ground. It is held in place by a frictionless pin at ground level. Weight A= 2230 nt is suspended from its upper end and the boom's weight B= 441 nt. A cable from its upper end to ground level makes angle 30 degrees with the ground.
Find T, the tension in the cable and the magnitude of P, the total force exerted on the boom by the frictionless pin.
Atwood's Machine The two masses (m1 = 5.1kg and m2 = 2.5kg ) in the Atwood's machine are released from rest, with m1 at a height of 0.95m above the floor. Determine the pulley's mass
Suppose 4.00 g of hydrogen is separatedinto electrons and protons. Suppose also the protons are placed atthe earth's North Pole and the electrons are placed at the SouthPole. What is the resulting compressional force on the Earth?
An eighteen-wheeler is going downhill when the driver sees a large animal on the road. The driver presses the brake pedal as hard as he can. What is the stopping distance of the vehicle
A sound wave propagates in air at 28°C with frequency 3.20 kHz. It passes through a region where the temperature gradually changes, and then it moves through air at 0°C. (a) What is the speed of the wave at 0°C? (b) What is the wavelength of the wave..
A ball of moist clay falls 19.8 m to the ground. It is in contact with the ground for 19.5 ms before stopping. What is the average acceleration of the clay during the time it is in contact with the ground
In reaching destination, a backpacker walks with an average velocity of 1.48m/s, due west. How far east did she walk
As in problem 80, an 89-kg man plans to tow a 102000-kg airplane along a runway by pulling horizontally on a cable attached to it. compute the greatest acceleration the man can give the airplane
A 2.00 kg stone is tied to a thin, light wire wrapped around the outer edge of the uniform 10.0kg cylindrical pulley shown in the figure below. Find the acceleration of the stone
The temperature of a gold bar rises by 10.0°C when it absorbs 0.677 kJ of energy by heat. The mass of the bar is 525 g. Determine the specific heat of gold from these data
A jet rises vertically, caring a load of concrete to make the foundation for a ski lift. A 35 kilogram bag of concrete is resting on a scale in the jet. what is the jet's acceleration
Consider the mass spectrometer shown schematically in the figure below. The electric field between the plates of the velocity selector is 5900 V/m, Calculate the radius r of the path for a singly charged ion
a supply plane needs to drop a package of food to scientists working on a glacier in greenland. the plane flies 158 m
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