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Q. An air puck of mass m1 = 0.30 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. The other end of the string passes by a hole in the center of the table, and a mass m2 = 1.20 kg is attached to it. The suspended mass remains in equilibrium while the puck on the tables revolves.
1) What is the tension T in the string?2) What is the magnitude of the horizontal force acting on the air puck?3) What is the speed of the puck?
A car is travelling at 15m/s while the driver spots a large pothole in the road a distance 45 m ahead. She immediately applies her brakes. Her acceleration is -9.6 m/s2. What is the stopping distance.
Setting a world record in a 100m race, Maggie and Judy cross the finish line in a dead heat, both taking 10.0 s. Accelerating uniformly, Maggie took 2.0 s and Judy 2.5 s to attain maximum speed that they maintained for the rest of race.
What is the maximum height the rocket reaches. How long is the rocket in the air.
A steel aircraft carrier is 364m long when moving through the icy North Atlantic at a temperature of 2.4°C. By how much does the carrier lengthen as it is traveling in the warm Mediterranean Sea at a temperature of 21° C.
find the tension in the wire.Find the maximum height above the ground reached by the package.
A rotating cylinder about 16 {rm km} long and 7.40 km in diameter is designed to be used as a space colony. With what angular speed must it rotate so that the residents on it would experience the same acceleration due to gravity as on Earth.
A lead ball, with an initial temperature of 25oC, is released from a height of 101.0 m. It does not bounce when it hits a hard surface. Presume all the energy of the fall goes into heating the lead. Find the temperature (in degrees C) of the ball ..
A styrofoam cooler (k = 0.030 W/(m·K)) has outside dimensions of 0.270 m by 0.230 m by 0.280 m, and an average thickness of 2.6 cm. About how long would it take for 1.60 kg of ice at 0 °C to melt in the cooler if the outside temperature is 30.0 °C..
A 63.00 kg person on skis starts from rest down a hill sloped at 33° from the horizontal. The coefficient of friction between the skis and the snow is 0.190.
Pandora Jewellery has turn into the best choice for ladies all more than the world who desires to express their personal style. The Pandora Bracelets provide a rich array of stylish diamond jewellery developed by artisans utilizing the finest mate..
A driver in a car travelling at a speed of 58.0 mi/h sees a deer 126 m away on the road. Calculate the minimum constant acceleration that is necessary for the car to stop without hitting the deer (assume that the deer does not move in the meantime).
Assume the masses described in the preceding problem are 1kg and 100kg in that order. Compare the accelerations while they are interchanged.
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