QUESTION 9 A model car initially at rest experiences a constant acceleration, reaching a speed of...
A wheel has an angular speed of 65 rev/s when it experiences a constant angular acceleration of 32 rev/s2 which causes it to spin FASTER. During this time the wheel completes 9 rev. Determine how long the wheel was experiencing this angular acceleration. Express your answer using appropriate mks units.
A satellite is in a circular orbit around the Earth at an altitude of 2.24 x 106 m. (a) Find the period of the orbit. (Hint: Modify Kepler's third law so it is suitable for objects orbiting the Earth rather than the Sun. The radius of the Earth is 6.38 x 106 m, and the mass of the Earth is 5.98 x 1024 kg.) h (b) Find the speed of the satellite. km/s (c) Find the acceleration of the satellite....
A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s2. Whatis its angular speed at the instant it goes through an angular displacement of 4.2 revs?1.1 rad/s is the correct answer.
Please answer both 2 and 5. 3-2 What is the angular speed, in SI units, of: 5 pts (a) The earth in its orbit about the sun every 365 days. rad/s ( + 2E-9 rad/s) (b) The moon in its orbit about the earth every 27.3 days. rad/s ( + 6E-8 rad/s) 3-5 A car is traveling at 96.0 km/hr The tires have a radius R = 38.4 cm. 5 pts (a) What is the angular speed of the tire...
001 10.0 points A car accelerates uniformly from rest and reaches a speed of 15.6 m/s in 4.5 s. The diameter of a tire is 35.6 cm. Find the number of revolutions the tire makes during this motion, assuming no slip- ping. Answer in units of rev. 002 10.0 points A figure skater begins spinning counterclock- wise at an angular speed of 4.2 π rad/s. Dur- ing a 4.6 s interval, she slowly pulls her arms inward and finally spins...
A bicyclist starting at rest produces a constant angular acceleration of 1.10 rad/s2 for wheels that are 33.0 cm in radius. (a.) What is the bicycle's linear acceleration (in m/s2)? (Enter the magnitude.) (m/s2) (b.) What is the angular speed of the wheels (in rad/s) when the bicyclist reaches 10.2 m/s? (rad/sec) (c.) How many radians have the wheels turned through in that time? (rad) (d.) How far (in m) has the bicycle traveled? (m)
A car initially traveling at 25.4 m/s undergoes a constant negative acceleration of magnitude 1.80 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.330 m? _______ rev (b) What is the angular speed of the wheels when the car has traveled half the total distance? ________ rad/s
A car initially traveling at 25.7 m/s undergoes a constant negative acceleration of magnitude 1.60 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.350 m? rev (b) What is the angular speed of the wheels when the car has traveled half the total distance? rad/s
A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration of 0.18 rad/s. After making 1850 revolutions, its angular speed is 85 rad/s. What is the initial angular velocity of the turbine? Answer:
A car initially traveling at 34.3 m/s undergoes a constant negative acceleration of magnitude 1.70 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.330 m? c rev (b) What is the angular speed of the wheels when the car has traveled half the total distance? rad/s