A dog sits at the center of a disk that is rotating at a constant rate. The dog slowly moves to the edge of the disk. Which of the following values doesn't change? Angular velocity Rotational inertia Rotational Kinetic Energy Angular momentum
Q: What is the new rotational energy of the system? answer have to be in kJ How much chemical…
A: The magnitude of the angular momentum of the system can be given by, Li=m1v1r1i+m2v2r2i=2mv(d2)⇒…
Q: The tangential acceleration of a point on a rotating object equals the distonce of that point trom…
A:
Q: On the topic of rotational motion, the gyroscope flywheel rotates in a circular motion horizontally…
A:
Q: A system of 5 point masses are rotating around a common point in space. If each 0.25 kg mass is a…
A: Given data: A system of 5 point masses Mass of each (m) = 0.25 kg Distance (r) = 0.54 m Required:…
Q: The rotational velocity of a merry-go-round increases at a constant rate from 0.4 rad/s to 1.8 rad/s…
A:
Q: A potter’s wheel is rotating with an angular velocity of 2.0 rad/s. If the velocity is increased to…
A: Given in question: Initial angular velocity(ωi) = 2.0 rad/s Final…
Q: An ice skater starts to spin with her arms outstretched. She then gently brings her arms in, and…
A: It states that when no external torque applied to the body, its angular momentum remains constant.…
Q: A solid sphere with a mass of 2 kg and a radius of 0.1 meters is rolling without slipping with a…
A: When an object rotates about an axis, it possesses kinetic energy due to its rotation.This is known…
Q: A bicycle slows down uniformly from v = 10 m/s to rest over a distance of 50 m. Each wheel and tire…
A: The equation to solve for the radius of the wheel is as follows: r=d2r=2 m2r=1 m…
Q: A wheel that starts from rest has an angular speed of 20 rad/s after being uniformly accelerated for…
A:
Q: A hollow spherical shell is rolling along the floor. What is the ratio of its total kinetic energy…
A: Linear velocity of sphere is v=rω
Q: A hollow sphere with a mass of 2.1 kg and radius of 0.15 m rolls without slipping down an incline of…
A: Given, mass of hallow sphere m = 2.1 Kg Radius of hallow sphere r = 0.15 m Incline angle θ=35∘…
Q: A disk of mass M and radius R rotates with an angular speed w about an axis through its center, an…
A:
Q: A wheel rotates about a fixed axis with an initial angular velocity of 26 rad/s. During a 7-s…
A: We know the initial and final angular velocity according to this problem. Now we can apply the…
Q: A solid ball has a mass of 0.165 kg and a radius of 51mm in mk units what is the rotational inertia…
A:
Q: Two different size solid spheres, made of the same material, are placed at the top of identical…
A: Explanation: Rotational kinetic energy of solid sphere is krot.=12Iω2 where I is the moment of…
Q: What is the moment of inertia ? of an object that rotates at 13.0 rev/min about an axis and has a…
A: Given data: Angular velocity (ω) = 13.0 rev/min Rotational kinetic energy (K) = 13.0 J Required:…
Q: What is the velocity of a point on the rim of a disk that has a moment of inertia of 0.5 kg-m2 and a…
A:
Q: What are the units for angular velocity?
A: Introduction: Angular velocity is defined as the rate of change of angular displacement. For an…
Q: A gymnast on a high bar swings clockwise through two revolutions in a time of 2.5 s. Find the…
A:
Q: How is rotational motion different from linear motion? Particles within the objects in rotational…
A: In rotational motion, linear velocity of each particle would be different. This is because different…
Q: The Earth spins on its axis and also orbits around the Sun. For this problem use the following…
A: a. Rotational Kinetic Energy of the Earth about its axisThe rotational kinetic energy of an object…
Q: A skater is spinning about a fixed symmetrical vertical axis. When she lifts her arms above her…
A:
Q: What is the moment of inertia: A solid disk with a mass of 5.0 kg and a radius of 2.0 m A 0.50 kg…
A: a) Moment of inertia of disk =12MR2 =10 kgm2 b) IT can be treated as a point mass. Moment of…
Q: What is the moment of inertia ? of an object that rotates at 14.0 rev/min about an axis and has a…
A: Angular velocity = 14 rev/min Angular velocity = (2π/60)×14 rad/s Angular velocity = 1.466 rad/s
Q: The net torque of the bar of negligible mass as shown in the figure below about the axis indicated…
A:
Q: An orangutan leaps off of a cliff and its body begins to rotate clockwise. If the orangutan then…
A: Solution: We are given that the orangutan leaps off a cliff and then its body begins to rotate…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- A wheel is rotating clockwise as shown (by the arrow). Its rotation axis coincides with the x-axis. A torque that causes the wheel to slow down is best represented by the vector 1 O 2 O 3 4 21 5The figure shows a graph of the angular velocity of a rotating wheel as a function of time. Although not shown in the graph, the angular velocity continues to increase at the same rate until t = 8.9 s. What is the angular displacement of the wheel from 0 to 8.9 s? +6.0 7 +3.0- 3.0 Time (s) 1.0 5.0 -3.0- -6,아 -9.0k Number Units the tolerance is +/-2% Click if you would like to Show Work for this question: Open Show Work Angular velocity (rad/s)Question 13 An ice skater starts to spin with an angular velocity of 2 rotations per second, when she moves her arms close together her angular inertia goes down by a factor of 5, how fast would she rotate then? O 2/5 rotations per second O 5 rotations per second O 5/2 rotations per second O 10 rotations per second Question 14 What is the tangential velocity of a ladybug that is 20 cm from the center of a turntable rotating at 5 radians per second? Hint: Watch the units O 4 m/s O 1 m/s O 100 m/s O 0.04 m/s Question 15 What is the magnitude of the centripetal force keeping the ladybug of the above problem in circular motion? Use 2x10-5 kg for her mass. Hint: Watch the units O 1x104 N O 1x107 N 2x10 3 N O 1x105 N
- A wheel with a radius of 0.4 meters initially at rest and begins to accelerate at 4 rad/s2. If the same constant torque was applied at the edge of the wheel, which of the following changes would decrease the acceleration of the wheel? (Select two right answers) Increase the radius of the wheel Decrease the mass of the wheel Increase the mass of the wheel Decrease the radius of the wheelWhat is the moment of inertia ? of an object that rotates at 14.0 rev/min about an axis and has a rotational kinetic energy of 24.0 J?The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.53 m and 1.04 m, respectively. The respective rotational speeds are 456 rev/min and 4,140 rev/min. Calculate the speeds of the tips of both rotors MAIN ROTOR M/S? TAIL ROTOR M/S Compare these speeds with the speed of sound, 343 m/sv main rotor = ? V SOUND tail rotor = V SOUND