An Olympic speed skater increases her velocity from Vi =6.54 m/s to Vf=9.19 m/s over a period of 5.2 seconds while skating around a curve with a 20m radius. What is the magnitude of her centripetal  acceleration at the end of this acceleration? What is the magnitude of her tangential acceleration over this 5.2 second period?

Q: Helicopter blades withstand tremendous stresses. In addition to supporting the weight of a…

A: A) Let n and ω denote the rotor’s given rate of rotation and its angular speed, respectively. The…

Q: Answer the following in terms of the objects velocity. a. If an object has a non-zero tangential…

A: Velocity is always directed along tangent to path .Velocity is a vector quantity it has direction…

Q: A particle moves in a circular path of radius R 2 m. At some instant of time, its total acceleration…

A: Given   Radius r=2m Total acceleration →a= 2m/s2 θ=30°

Q: Consider the following figure. 40 m 80 m A race track is constructed such that two curves of…

A:

Q: ar exits the highway at 20.0 m/s and enters a 220 m radius curve. After breaking uniformly for 6.00…

A: Centripetal acceleration = v2 /r

Q: An object is flying around the circle on a rope of radius 4 meters, and its speed is 2 meters per…

A:

Q: The automobile has a speed of 70 ft/s at point A and an acceleration aa having a magnitude of 20…

A:

Q: Objects that are at rest relative to Earth’s surface are in circular motion due to Earth’s rotation.…

A: Given Data :  position of painting = latitude of 40.2 degrees North  To Find :  radial acceleration…

Q: centrifuge that has a radius of 10 m. The astronaut is experiencing 10g, meaning that the…

A: Given: The Radius  of the centrifuge (r) = 10 m. The mass  experienced by the astronaut (m) = 10 g…

Q: A particle moves with a constant tangential acceleration along the circular path shown. If the…

A: Given, Particle is moving in curved path with constant tangential acceleration

Q: In a vertical dive, a peregrine falcon can accelerate at 0.6 times the free-fall acceleration g…

A:

Q: An ultracentrifuge accelerates uniformly from rest to 100,000 rpm in 2.0 min. If this…

A:

Q: A father fashions a swing for his children out of a long rope that he fastens to the limb of a tall…

A: The tangential speed at the bottom of the swing is, v=9.85 m/s The radius of the swing's circular…

Q: A particle which moves in two-dimensional curvilinear motion has coordinates in millimeters which…

A: It is given that, x=7.5t2+6.9 mm, and y=6.8t3+2.1 mm. It is required to find the radius of curvature…

Q: A disk of radius 3.00 m rotates like a merry-go-round as given by the function θ = 2.00t^4 +…

A: Radius of the disk, r=3 m The angular position of the point on the rim at time t, θ=2t4+6t2 Time at…

Q: A football is kicked with an initial velocity of 45 m/s at an angle of 30-degrees  with the…

A:

Q: object moving in a circular trajectory experiences both centripetal and tangential accelerations.…

A: Given: An object moving in a circular trajectory experiences both centripetal and tangential…

Q: In a medical lab, you put blood in tubes in a centrifuge to separate the plasma from the formed…

A:

Q: The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 7.34…

A: Given:-  The large blade of a helicopter is rotating in a horizontal circle. The length of the blade…

Q: 1. A stopwatch starts while race car travels at 7 m/s from the pit area and accelerates at a uniform…

A:

Q: You are working in a biology lab and learning to use a new ultracentrifuge for blood tests. The…

A:

Q: A particle moves in a circular path of radius R = 2 m. At some instant of time, its total…

A: R = 2M →a = 20m/s2 θ=30°

Q: Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the track is a…

A: Radius of track (r) = 57 m Constant speed (v) = 29.5 ms

Q: A 2.0 x 103 kg car travels at a constant speed of 10.9 m s-1 around a circular curve of radius 30.2…

A: Given, It is given that the car travels around a circular curve. Mass of the car = 2 * 103 kg Speed…

Q: Joe twirls a marbl

A: 2.6 m/s

Q: Consider a bike gear such as the two shown. Let's consider a gear that has a radius of 15…

A: Given: The radius of the gear is 15 cm. The speed of the gear is 4.9 m/s constant.

Q: An ultracentrifuge accelerates from rest to 9.83 x 10° rpm in 2.23 min. What is its angular…

A: Given : Initial angular velocity (wo) = 0 Final angular velocity (w) = 9.83 x 105 rpm = 9.83 x…

Q: QUESTION 10 An object initially moving with a velocity of 5.00 m/s South, slows down and changes its…

A: Q10.  Remember that average acceleration is given by: a_avg = change in velocity/time interval a_avg…

Q: A car is traveling at 60 km-hr along a level road when it reaches a curve with a radius of 900…

A: Initial speed of car u = 60 km.hr-1= 16.67 m/sFinal speed after t = 5 s v= 50 km.hr-1 =13.89…

Q: An ultracentrifuge accelerates uniformly from rest to 100,000 rpm in 2.0 min. If this…

A: The ultracentrifuge’s angular acceleration can be determined as, Here, ω, α, and t represents the…

Q: Find the tangential components of acceleration of the point for the instant after 1s. b. Find the…

A:

Q: A particle starts moving in a plane with constant tangential acceleration a₁ = 2 m/s² and normal…

A:

Q: The blade of a lawn mower is rotating at 128rad/s. The tangential speed of the outer edge of the…

A:

Q: A jet fighter pilot flying at 300 m/s makes a turn with a radius of 1.5 km. Determine the radial…

A: speed = 300 m/s Radius = 1.5 km = 1500 m Radial acceleration = V2 / R  = (300)2 / 1500  = 90000/1500…

Q: Suppose a NASCAR race car rounds one end of the approximately 57.0 m. If the track is completely…

A:

Q: A fast-pitch softball pitcher with an arm 0.65m long executes a pitch in 0.5 seconds. At the instant…

A:

Q: A particle moves in a circular path of radius R = 2 m. At some instant of time, its total…

A: This question is based on Circular Motion topic. We need to have knowledge of acceleration in…

Q: A particle moves along a circular path of radius 300 mm. If its angular velocity is 2t² rad/s, where…

A:

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.