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In the diagram below, a street light m is hung from a horizonal beam; the beam is supported by a pin at P and by the cable (cord) from the end of the beam to the upper part of the pole. Given that the beam is uniform and has a mass of 108 kg, the angle θ= 35o, x2 = 3.55 m, x1= 2.18 m, and that the mass of the street light is m = 42.7 kg, find the tension in the cable. Use 9.8 m/s2 and express your answer to three significant digits. Use scientific notation. (Suggestion: Draw a free body diagram of the beam and take torques about P.)
A 67-kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal. The initial speed of the skier is 6.5 m/s. After coasting 1.9 m up the slope, What is the magnitude of the kinetic frictional force
Two point charges each with 6.0 x 10-2 C of charge are 0.14 meter apart. Knowing that k is 9 x 109 N•m2/C2 (the proportionality constant for Coulomb's law), compute the force between the charges
You are trying to advance your shooting skills by shooting at a can on top of a fence post. You miss the can, and the bullet, moving at 207 m/s, is embedded 1.54 cm into the post when it comes to a stop. If constant acceleration is assumed, how long ..
Altitude of 575 meter with zero initial velocity; 8.0 second she falls freely; rate of descent at 15m/s^2 until her rate of descent reaches 5.0 m/s. Find her average velocity for the entire trip
A Heavy rainstorm dumps 1.0 cm of rain on a city five km wide and 8 km long in a two hr period. How many metric tons (1metric ton = 10^3 kg) of water fell on the city? [1cm^3 of water has a mass of 1 gram=10^-3.] How many gallons of water was this?
A 20kg satellite has a circular orbit with a period of 2.4 h and aradius of 8.0 × 106m around a planet of unknown mass. what is the radius of the planet
What relationship did Galileo discover about a ball%u2019s acceleration, What acceleration occurs when the plane is vertical
Could a Lorentz engine (like the ones that move the write head inside of hardrives) be used to run car ? Would it be possable to get it producing 60hp, and a decent amount of tourque, if so how large would it have to be / what would its power con..
A space vehicle is coasting at a constant velocity of 20.6 m/s in the +y direction relative to a space station. determine the magnitude of the vehicle's velocity
In a particular power plant, the fuel rods last 2 years before they are replaced. If a plant with rated thermal power 1.00 GW operates at 76.0% capacity, what is the loss of mass the fuel?
A ball is thrown upward from a platform 4.0 m high with a speed of 23 m/s at an angle of 37 o from the horizontal. What is the magnitude of its velocity when it hits the ground?
A jetliner is moving at a speed of 216 m/s. The vertical component of the plane's velocity is 79.70 m/s. establishes the magnitude of the horizontal component of the plane's velocity.
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