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A 0.55 kg mass sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (with k = 850 N/m) whose other end is fixed. The mass has a kinetic energy of 17.0 J as it passes through its equilibrium position (the point at which the spring force is zero). At what rate is the spring doing work on the mass as the mass passes through its equilibrium position?
The roof makes an angle of 23 degrees with the horizontal. If the edge of the roof is 10 meters high, clarify how far from the base of the house the basketball hits.
define the magnitude of the tension in the chain.
An aircraft weighing 849 N is accelerated at 7 m/s/s for 13 seconds, at which time the aircraft launches. How much work was done on the aircraft
A 64-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 834 N. What is the acceleration of elevator.
Consider a conical pendulum with a bob of mass m = 95.0 kg on a string of length L = 10.0 m that makes an angle of ? = 3.00° with the vertical. Determine the radial acceleration of the bob
Astronauts put their spaceship into orbit about a planet. How far above the planet's surface are they orbiting
A pump flows 100 gal/min of water. The inlet pressure is 0 psig and the outlet pressure is 20 pisg. How much electricity (kW) is required to power the motor
A ball of mass 0.40 kg moving at 180 m/s east strikes a second ball, initially at rest of mass 0.500 kg. What is the final velocity of the second ball
A solid, uniform ball rolls without slipping up a hill, How far from the foot of the cliff does the ball land
a bicyclist of mass 54 kg puts all his weight on each downward-moving pedal as he pedals up a steep road. determine the magnitude of the maximum torque he exterts in the process
A rectangular block of ice 12 m on each side and 1.2m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917kg/m3.
The 6.275 kg sledge hammer shown on the right has a small hole drilled at point "P" and a metal rod is inserted to act as a low-friction pivot. When the hammer is displaced slightly and allowed to swing from the pivot, its period of oscillation is ..
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