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A 2.1 kg mass is attached to a 0.4 m long massless string andswings as a pendulum. If the maximum angle achieved by the pendulumis θ = 30°, what is the maximum tension in the string?
a mass vibrates back and forth from the free end of an ideal spring of spring constant 20 nm with an amplitude of .25
A sledge loaded with bricks has a total mass of 18.1 kg and is puled at a constant speed by a rope inclined at 19.0^above The horizontal. determine the mechanical energy lost due to friction
A father racing his son has three-fifths the kinetic energy of the son, who has one-third the mass of the father. What is the original speed of the father
A fish is 2 m below the surface of a smooth lake. What is the diameter of circle on the surface through which the fish can see the world outside the water
questiona professional race-car driver buys a car which can accelerate at 89.0 ms2. the racer decides to race beside
A ball is thrown toward a cliff of height h with a speed of 30m/s and an angle of 60? above horizontal, What was the maximum height of the ball
In a certain automobile engine with an efficiency of 19.2%, combustion of gasoline in one cylinder releases 490 J of heat. Find the total mechanical power produced by all four cylinders, operating at 48 cycles/s, or 2880 rpm
question1which of the follow describes possible scenarios?a an object has zero instantaneous velocity and non-zero
You have a 1200W microwave. When you put a cup of water in for 8 minutes only half evaporates. How eficient is your microwave
you have a 100.00 cm track inclined at 10.000 degrees. You roll a steel ball down the track until it drops off the track and falls 1.0000 m to the floor
On October 21, 2001, Ian Ashpole of the United Kingdom achieved a record altitude of 3.35 km (11,000 ft) powered by 600 toy balloons filled with helium. Estimate the total buoyant force on the 600 balloons
A 120.kg refrigerator is at rest on a kitchen floor ( mu of s= 0.43 and mu of K= 0.27). How much force is needed to move the refrigerator at a constant speed of 5.41 m/s
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