Ex. 20 : An aircraft takes a turn along a circular path of radius 1500 m, if the linear speed of the aircraft is 300 m/s. Find its angular speed and time taken by it to complete(1/5)th of the circular path. Ex.
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- An automobile with 0.300 m radius tires travels 70,000 km before wearing them out. How many revolutions do the tires make, neglecting any backing up and any change in radius due to wear? x revolutions A truck with O.600 m radius tires travels at 29.0 m/s. At how many radians per second are the tires rotating? What is this in rpm? гad/s rpmA disc accelerates uniformly from 300 revolutions per minute to 600 revolutions per minute in 25 (s). What is the linear acceleration of a point on the rim of the disc, if the radius of the disc is 250 mm.The period of a stone swung in a horizontal circle on a 2.50-m radius is 1.20 s. (a) What is its angular velocity in rad/s? (b) What is its linear speed in m/s? (c) What is its radial acceleration in m/s2?
- A car sits at rest at the starting line of a circular racetrack. It begins to accelerate at a constant rate (that 15, a constant angular acceleration) as it makes Its way halfway around the track. It then decelerates at the same constant rate during the second halt of the lap. It completes the entire lap in a time of 28.5 seconds. Also, the radius of the racetrack is 42.0 m. What is the car's top speed?A) 25.6 m/SB) 44.1 m/SC) 18.5 m/sD) 35.1 m/sAn automobile with 0.230 m radius tires travels 65,000 km before wearing them out. How many revolutions do the tires make, neglecting any backing up and any change in radius due to wear?A rectangular Plate is rotating with a constant angular speed about an axis that passes perpendcularly sthrough one corner. The centripetal acceleration measured at a corner A is n times as great times as that measured at corner B. What is the ratio L1/L2 of the lengths of the sidse of the rectangle when n=3.95
- A car is on a race track of radius 1200 feet. The car begins moving at 118 ft/s, but accelerates at 12.2 ft/s2 up to its top speed, traveling 2510 feet to do so. What is the angular displacement, angular acceleration and initial angular speed of the car about the track?include FBD. thanks!A race car, starting from rest, travels around a circular turn of radius 28.5 m. At a certain instant, the car is still accelerating, and its angular speed-is 0.794 rad/s. At this time, the total acceleration (centripetal plus tangential) makes an angle of 35.0° with respect to the radius. What is the magnitude of the total acceleration? Number Units
- An ultracentrifuge accelerates from rest to 8 X 104 rpm in 3.5min. What is the tangential acceleration of a point 0.08m from the center?A centrifuge in a biology laboratory rotates at an angular speed of 3,500 rev/min. When switched off, it rotates 54.0 times before coming to rest. Find the constant angular acceleration of the centrifuge (in rad/s2). Consider the direction of the initial angular velocity to be the positive direction, and include the appropriate sign in your result. rad/s? Need Help? Read ItAn automobile engine slows down from 4000 rpmrpm to 1400 rpmrpm in 2.7 ss . Calculate its angular acceleration, assumed constant. Calculate the total number of revolutions the engine makes in this time.