A good baseball pitcher can throw a baseball toward homeplate at 85 mi/h with a spin of 1800 rev/min. How many revolutionsdoes the baseball make on its way to home plate? For simplicity,assume that the 60 ft path is a straight line.

Q: A race car makes one lap around a track of radius 50.m in 11.0 s 3.1.1 What is the car's average…

A: Given data:  Radius of circular track (r) = 50 m Time period (T) = 11.0 s Required: The car's…

Q: A ballet dancer performs a triple pirouette (3 full rotations) in 2.75 seconds, what was his angular…

A: one rotation =3600 three rotations =3*3600                           =10800…

Q: A high-speed drill reaches 2000 rpm in 0.50 s. Through how many revolutions does it turn during this…

A:

Q: A wheel of radius R starts from rest and accelerates with a constant angular acceleration a about a…

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Q: A centrifuge in a medical laboratory rotates at an angular speed of 3,550 rev/min, clockwise (when…

A:

Q: During a certain time interval, the angular position of a rotating disk is described by =20-t+3r If…

A: Angular position of rotating disk is given by : θ = 20 - t + 3t3Diameter = 22 cm Radius = 11 cm =…

Q: A 0.30m radius automobile tire rotates how many radafter starting from rest and accelerating at a…

A: Given: The radius of the tire is 0.3 m. The initial angular speed of the tire is 0 rad/s. The…

Q: An automobile with 0.310 m radius tires travels 95,000 km before wearing them out. How many…

A:

Q: Can an object have zero translational acceleration and, at thesame time, have nonzero angular…

A: The motion of the rigid body can be classified into three different types, i.e. pure translation,…

Q: A point moves on a path of 3m in diameter so that the distance traversed is s= 3t^2. What is the…

A:

Q: When a slice of buttered toast is accidentally pushed over the edge of a counter, it rotates as it…

A: The toast rotates at constant angular speed as it falls, and it falling with constant acceleration.…

Q: A point along the minute hand of a clock covers an area of 12π cm2 at a certain time. What is the…

A: We know ,  Minute hand complete a full revolution  in one hour .   Total angle rotated by minute…

Q: For each of the following problems, find the angular velocity, in radians per minute, associ-ated…

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Q: A race car starts at rest and accelerates in a circular path (r = 500 m) to a speed of 35 m/s in 11…

A: Given : r = 500 m vi = 35 m/s t = 11 s vf = 15 m/s

Q: A compact disc's rotation varies from about 190 rpm to 480 rpm. if the disc plays for 71 min, what's…

A:

Q: Olympic ice skaters are able to spin at about 2 rev/s. (a) What is their angular velocity in radians…

A: Given The number of revolution is N = 2 rev/s. The angular velocity is calculated as, ω=2πN…

Q: A engine wheel with 2 meter radius starts and rotates with an accleration of 5 rads/s2. whats the…

A: Angular acceleration α=5 rad/s2 Time t=5 s Radius r=2 m

Q: An automobile with 0.230 m radius tires travels 90,000 km before wearing them out. How many…

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Q: Calculate the angular speed of a flywheel making 48o revolutions per minute.

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Q: The end of the cutting cord on a gas-powered weed cutter is 0.21 m in length. If the motor starts…

A:

Q: A wheel witha radius 0.54 rolls across the level ground, initially moving forward with a speed of…

A:

Q: a computer hard drive rotates at 5400 rpm. what angular acceleration will get it up to speed in just…

A: The number of revolution per minutes,

Q: The equation between displacement 0 of a rotating body moving with constant angular acceleration a…

A: Given data: Constant acceleration = α Time = t Initial angular speed = ωi Need to write the equation…

Q: A bicycle wheel of radius 40.0 cm and angular velocity of 10.0 rad/s starts accelerating at 80.0…

A: centripetal acceleration = R w2 where R is the radius w is the angular speed  = 0.4 * (10*10)  = 0.4…

Q: A centrifuge rotor is accelerated for 10 s from rest to 1000 rad/s. What is the average angular…

A: The final angular speed, ωf=1000 rad/s   The initial angular speed, ωi=0 rad/s   The time taken,…

Q: a 185 gram smartphone connected ti its charging cable is playfully whirled in a horizontal circle…

A: a 185 gram smartphone connected ti its charging cable is playfully whirled in a horizontal circle…

Q: There in a horizontal platform which revolves about it center at 25 rpm. Ithas a diameter of 6m.…

A:

Q: a stone tied to the end of a string 50cm long is whirled in a horizontal circle with constant speed…

A:

Q: Two Formula-one racing cars are negotiating a circular turn, and they have the same centripetal…

A: Given

Q: An automobile with 0.260 m radius tires travels 80,000 km beforewearing them out. How many…

A: Number of revolutions will be,

Q: A wheel, initially at rest, starts and rotates trough an angle 100rad with a constant angular…

A:

Q: A centrifuge accelerates uniformly from rest to 13000 rpm in 180 s. A. Through how many…

A: The acceleration is uniform. So, we can calculate the average velocity as shown below.

Q: please answer both

A: Given: angular velocity 'ω' = 9.89 x 105 rpm = 103.56782 x 103 rad /s  time to reach above velocity…

Q: An automobile with 0.320 m radius tires travels 95,000 km before wearing them out. How many…

A:

Q: An airplane propeller is rotating at 1900 rpm (rev/min). (a) Computethe propeller’s angular velocity…

A: (a)  For conversion of rev/min to rad/s , In 1 rev there are 2π rad.  In 1 min there are 60 seconds.…

Q: An automobile with 0.230 m radius tires travels 65,000 km before wearing them out. How many…

A: We know,                 ∆θ=∆s∆r Where, ∆θ = Rotational angle ∆s = Distance covered ∆r = Radius…

Q: A grindstone, initially at rest, is given a constant angular acceleration so that it makes 5.20 rev…

A:

Q: An ultracentrifuge accelerates from rest to 9.93 × 10° rpm in 1.87 min. What is its angular…

A: wo = 0 rad/secw = 993000 rpm  = 103986.7 rad/sect = 1.87 min  = 112.2 sec

Q: Two Formula-one racing cars are negotiating a circular turn, and they have the same centripetal…

A: Given: Centripetal acceleration of both the car is same radius of path of car A, RA = 48 m  radius…

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.