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4. A 1.50 kg point mass is 200.0 cm from a 3.00 kg point mass. Where...
questions 4 and 5 please
4. A 1.50 kg point mass is 200.0 cm from a 3.00 kg point mass. Where is their center of mass, measured from the 1.50 kg mass? Xcm =- 5. Starting from rest, a disk spins with a constant angular acceleration. After 2 minutes it has completed 50 revolutions. How many revolutions will it have completed at 4 minutes? a) 25 rev b) 71 rev. c) 100 rev d) 200 rev
A golf ball (50 g) hit by a club is accelerated from rest to 50 m/s in 2.50 ms. What are the magnitudes of the impulse delivered to the ball and the average force acting on the ball? Impulse = Average Force = A disk of radius 10.0 cm spins about an axis through its center at a constant 5.0 rad/s. What is the linear velocity, centripetal and tangential accelerations of a point on its rim? linear velocity = centripetal...
A large metal disk with mass M=5 kg and R= 3m starts from rest and is free to without friction about an axis passing through its center of mass point 0. perpendicular to the disk. 4 light engines providing a constant thrust force F=20 N, are connected to the circumforce of the disk in the orientation shown. dashed lines are tangent to the disk. Engines ignite at t=0. The moment of inertia of the disk about its center I disk=...
A solid cylinder has length L = 50.0 cm, radius R = 40.0 cm, and
mass m = 600 kg. Starting from rest, it is uniformly accelerated
for 5.0 seconds, until spinning around its axis at 20 rev/s.
a. What is the angular acceleration in rad/s2 ?
b. Through what angular displacement did the cylinder turn in
these 5.0 s?
ZOOM 40.0 cm, and mass m = 600 kg 2. A solid cylinder has length L = 50.0 cm, radius...
A disk with a mass of 15 kg is spinning about its center with a constant angular acceleration applied to it. Its c value is 1/2 about its center and it is initally spinning at 5 rad/s clockwise. If the disk stops spinning in a time of 1.5 s, how many revolutions does the disk make until it stops? 1.79 rev. 3.75 rev. 11.25 rex 0.60 rev. MacBook Pro $ % 5 & 7 8 E R T Y F...
A 50.0 kg child is on a 200.0 kg merry-go-round with a radius of 1.50 m. The child starts at 0.5 m from the center and moves to the edge. The child's parent accelerates the merry-go-round from rest at 0.75Td to a speed of 1.5 Fad How long did the parent push the merry-go-round? How much force is required to hold the child when at 0.5 m from the center? (This centripetal force could be from friction, holding on, or...
A compact disk, which has a diameter of 12.0 cm, speeds up uniformly from zero to 4.40 rev/s in 3.20 s What is the tangential acceleration of a point on the outer rim of the disk at the moment when its angular speed is 3.00 {rev/s}?
1. A 40 cm cylindrical disk of mass 5 kg rolls down an incline. If it starts at rest and is rolling at a speed of 30 revolutions per minute after 3 minutes, how many revolutions has it undergone in that 3 minutes?
V. A 10-cm diameter, solid, uniform circular disk with mass 0.2 kg rolls, without slipping, starting from rest, down a long 30° incline. It reaches an angular speed of 8 rad/s in 4 s. The distance moved by the center of mass of the disk in 2.0 s is: a. 0.8 m b. 0.1 m c. 0.2 m d. 2.0 m e. None of the above
V. A 10-cm diameter, solid, uniform circular disk with mass 0.2 kg rolls, without slipping, starting from rest, down a long 30° incline. It reaches an angular speed of 8 rad/s in 4 s. The distance moved by the center of mass of the disk in 2.0 s is: a. 0.8 m b. 0.1 m c. 0.2 m d. 2.0 m e. None of the above