A fast pitch softball player does a “windmill” pitch, illustrated is shown, moving her hand through a circular arc to pitch a ball at 70 mph. The 0.19 kg ball is 50 cm from the pivot point at her shoulder. At the lowest point of the circle, the ball has reached its maximum speed.a. At the bottom of the circle, just before the ball leaves her hand, what is its centripetal acceleration?b. What are the magnitude and direction of the force her hand exerts on the ball at this point?

Q: A car is travelling around a circular track of radius 100 m at a constant speed of 70 km/h. 1200 kg…

A:

Q: A rock of mass m = 0.82 kg is attached to a massless string of length L = 0.72 m. The rock is swung…

A:

Q: An astronaut orbiting the Earth is preparing to dock with a Westar VI satellite. The satellite is in…

A: height of satellite above the surface of earth (h) = 400 km radius of earth (r) = 6400 km value of g…

Q: What is the centripetal acceleration of the ball? Are the forces acting on the ball balanced?…

A: Given,  Length of the string L=2.10m  speed v=367 cm/s The forces acting in the Y direction…

Q: You are not on earth. You have a ball on a string. You whirl it in a vertical circle (similar to the…

A: a)1. Gravitational acceleration, g=8 m/s22. Mass of ball, m= 5 kgb) Length of string, r=1.5 m3.…

Q: a string moves uniformly in a horizontal circle with a radius of 1.25 meters at a height of 6 meters…

A: We know that the second  equation of motion is given as  h = ut +12gt2 where h is the height and t…

Q: A car with mass 500 Kg rotating with a constant circular speed in a track of 60 m radius. It…

A: Given, mass=m=500 kg radius of track=r=60m time=35 s Centripetal acceleration is given byv2r

Q: A tennis ball is attached to a setting and rotated in a horizontal circle of radius R with velocity…

A: Given: The change of radius of circle is 4r

Q: 4.0 kg ball is attached to the end of a rope that is 2.2 meters long and swung overhead in a…

A:

Q: Question 3 motion is a motion of an object near the Earth's surface in an arc or parabolic…

A: An object's projectile motion can be described as the movement of an object in 2D given an initial…

Q: A ferris wheel with a radius of 100.0 m. Each of the sixty gondolas on the wheel takes 2.00 minute…

A:

Q: A racecar is driven on a horizontal circular track at a constant speed of 20.0 m/s. The radius of…

A: A. Yes that is accelerated in the direction is radially outward, because of the centrifugal force…

Q: A toy plane is connected to a string. You hold the free end of the string and whirl the plane…

A: A toy plane is whirled in a horizontal circle such that it performs uniform circular motion. To find…

Q: The maximum centripetal acceleration a car can sustain without skidding out of a curved path is 9.40…

A: Given: Maximum centripetal acceleration is 9.40 m/s2. Speed is 40 m/s

Q: Two identical artificial satellites, 1 and 2, orbit the Earth in circular orbits having radii R1 and…

A: Radius of first satellite R1 and radius of second satellite R2 are related by R2=3R1. For a…

Q: It takes a time t = 0.59 s for a record to revolve on a record player once. A particular point on…

A: The objective of the question is to find the radius at which the needle is in contact with the…

Q: 3. A 900 kg car drives over a brige in the shape of a circular arc with radius 40 m. The car moves…

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: Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the…

A: The centripetal acceleration is given by  a =r w2 where, r is the length and w is the angular speed.…

Q: A 0.25 kg ball is swung in a vertical direction on the end of s 1.5 m long cord of negligible mass.…

A:

Q: A basic pendulum (a mass swinging at the end of a string) moves in a circular arc. What is the…

A: During the oscillations of simple pendulum, the direction of its acceleration at the mean position…

Q: A sprinter runs at 9.2 m/s around a circular track with centripetal acceleration 3.8 m/s2 What is…

A: Given that,The velocity : v=9.2 m/sec The centripetal acceleration : ac = 3.8 (m/sec2) Here we need…

Q: centripetal acceleration

A: Given: Velocity of vehicle is v=20 m/s Vehicle moving along a circular path with centripetal…

Q: A 20.0g ball is attached to a 120cm long string and moves in a horizontal circle. The string exerts…

A:

Q: 1) A 4-lb object is swung at the end of a 3-ft cord in a horizontal circle at 80 rpm. a. What is its…

A:

Q: A disk of mass m=1.50 kg slides on a frictionless table where it makes a circle of radius r=20.0 cm.…

A: Introduction: For hanging mass M to remain at rest, tension of the rope should be equal to weight…

Q: 15. A person is on a horizontal rotating platform at a distance of 4.3 m from its centre. This…

A:

Q: Beth is writing a merry-go-round at the Hamilton County fair. Beth's horse is located 6.5 m from the…

A: Given horse located from the center of the merry-go-around = radius of circular path = R = 6.5 m…

Q: A weight is spinning at the end of a .75 meter string. If it takes .33 seconds for the weight to…

A: Length of the string (L) = 0.75 m time taken to complete one revolution (T) = 0.33 seconds

Q: A fire dancer swings with a hand in a vertical loop a glass attached to the end of a scarf. The…

A: As given in the question :R(radius)=0.6 mand, mass=m

Q: A stone is tied to a string and rotated at 6 m/s in a horizontal circle. The speed is then decreased…

A: Given  V1= 6 m/s   V2 = 2 m/s  Since , Length of string is fixed . Let length of string is 'R' .…

Q: ac 2 V R F.=mac A vinyl "record" with a diameter of 0.3 m is spinning at a rate of 1 m/s. a) What…

A:

Q: Mary and her younger brother Alex decide to ride the 17 ft diameter carousel at the State Fair. Mary…

A: Write the given values with the suitable variables. rM=7 ftrA=6 ft Here, rM and rA are the distance…

Q: A 1.44 x 104 N automobile is moving with a constant speed of 6 km/h on a curve of 30 m radius. a.…

A: Given that Weight of the automobile W = 1.44 X 104 N Constant speed V = 6 km/h = 1.67 m/s Radius r =…

Q: A ball having a mass of 5.2 kg is swinging at the end of a cord in a vertical circle of radius 2 m…

A:

Q: If the Earth’s orbital velocity around the Sun were twice as large, its centripetal acceleration…

A: Formula - centripetal acceleration a= v2/r Here:- v = velocity of earth r = radius  Given -…

Q: 1. In a nonuniform circular motion, what is the direction of the tangential acceleration if the…

A: 1. In a nonuniform circular motion, what is the direction of the tangential acceleration if the…

Q: QUESTION 7 A particular is moving in a circle of radius r with a uniform speed v. Its centripetal…

A:

Q: 3. A roller coaster is built so that there is a circular curve of radius 80.0 m at the top of one…

A: Given data: Mass, m =50.0 kg Speed v=20.0 m/s Radius r=80.0 m

Q: exceptional skater named Dick Button was able to spin much faster in the 1950s than anyone since- at…

A:

Q: A 2.5 kg object is in uniform circular motion with a period of 5 s. If the radius of the path is 2…

A: centripetal force acting on an object in uniform circular motion isFc​=rmv2​Where: m  is the mass of…

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.