A 50.0 kg child stands at the rim of a merry-go-round of radius 2.20 m, rotating with an angular speed of 2.80 rad/s.   (a) What is the child's centripetal acceleration?  -_______________________m/s2 (b) What is the minimum force between her feet and the floor of the merry-go-round that is required to keep her in the circular path?  -_________________________ N (c) What minimum coefficient of static friction is required?

A 50.0 kg child stands at the rim of a merry-go-round of radius 1.70 m, rotating with an angular speed of 2.95 rad/s. (a) What is the child's centripetal acceleration? m/s2(b) What is the minimum force between her feet and the floor of the carousel that is required to keep her in the circular path? N(c) What minimum coefficient of static friction is required?Is the answer you found reasonable? In other words, is she likely to stay on the merry-go-round?

A rock tied to the end of string swings at a constant angular rate. If you are told that the string can support a total of 85 N of force before breaking, what is the maximum angular velocity the rock can rotate if the rock has a mass of 0.16 kg, and the length of the string is 0.5 m? Give your answer in units of radian per second

It has been suggested that rotating cylinders about 20.0 mi long and 5.49 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration on Earth?                                                                                             rad/s

An ultracentrifuge accelerates from rest to 100,000 rpm in 2.30 min. (a) What is its angular acceleration in rad/s2?      _________rad/s2 (b) What is the tangential acceleration of a point 10.7 cm from the axis of rotation?_________m/s2 (c) What is the radial acceleration of this point at full rpm?_________m/s2 (d) Express this radial acceleration as a multiple of g._________g

Problem 12: A merry-go-round is a playground ride that consists of a large disk mounted to that it can freely rotate in a horizontal plane. The merry-go-round shown is initially at rest, has a radius R = 1.3 meters, and a mass M = 241 kg. A small boy of mass m = 46 kg runs tangentially to the merry-go-round at a speed of v = 1.8 m/s, and jumps on. Randomized Variables R = 1.3 meters M = 241 kg m = 46 kg v = 1.8 m/s

An athlete swings a 3.30-kg ball horizontally on the end of a rope. The ball moves in a circle of radius 0.880 m at an angular speed of 0.610 rev/s. (a) What is the tangential speed of the ball? m/s (b) What is its centripetal acceleration? m/s² (c) If the maximum tension the rope can withstand before breaking is 91 N, what is the maximum tangential speed the ball can have? m/s

Riders are seated in a horizontal circle of radius 7.50 m on a carnival ride. They start from rest and accelerate uniformly for 21.0 seconds to a maximum rotational speed of 1.40 rad/s. Calculate the tangential acceleration of the riders during the first 21.0 s of the ride.

It has been suggested that rotating cylinders about 12.5 mi long and 5.07 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration on Earth? rad/s

An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad/s). If a particular disk is spun at 968.7 rad/s while it is being read, and then is allowed to come to rest over 0.301 seconds, what is the magnitude of the average angular acceleration of the disk? rad average angular acceleration: s2 If the disk is 0.12 m in diameter, what is the magnitude of the tangential acceleration of a point 1/7 of the way out from the center of the disk? m tangential acceleration: s2 about us privacy policy terms of use contact us help careers tv W MacBook Air F12 F10 F9 80 000 000 F4 F3