2. The figure at the right shows a uniformdisk that can rotate around a fixed axisthrough its center. (The axis is perpendic-ular to the page.) The disk has a radiusof 0.02 m and a mass of 0.02 kg, and isinitially at rest. Starting at time t = 0, twoforces are applied tangentially to the rimas indicated. The force F₁ has a magnitudeof 0.1 N, and the force F2 has a magnitudeof 0.15 N.F₂k(a) Indicate the directions ( ±k) of the following:71, the torque due to F₁72, the torque due to F₂a, the angular acceleration after the disk starts rotating., the angular velocity after the disk starts rotating.(b) What is the angular momentum Ĺ of the disk after the forces at t= 10 s?Note: the moment of inertia for a uniform disk is I = ½{MR².Î

Given Data The radius of the disk (R)=0.02m Mass of the disk(m) =0.02kg The force F1 has a magnitude…

2. The figure at the right shows a uniform disk that can rotate around a fixed axis through its center. (The axis is perpendic- ular to the page.) The disk has a radius of 0.02 m and a mass of 0.02 kg, and is initially at rest. Starting at time t = 0, two forces are applied tangentially to the rim as indicated. The force F₁ has a magnitude of 0.1 N, and the force F₂ has a magnitude of 0.15 N. TE ☐ k KO (.m Î

2. The figure at the right shows a uniform disk that can rotate around a fixed axis through its center. (The axis is perpendic- ular to the page.) The disk has a radius of 0.02 m and a mass of 0.02 kg, and is initially at rest. Starting at time t = 0, two forces are applied tangentially to the rim as indicated. The force F₁ has a magnitude of 0.1 N, and the force F₂ has a magnitude of 0.15 N. TE ☐ k KO (.m Î

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter10: Rotational Motion And Angular Momentum

Section: Chapter Questions

Problem 15PE: Consider the 12.0 kg motorcycle wheel shown in Figure 10.38. Assume it to be approximately an...

See similar textbooks

Similar questions

Given the disk and density in Problem 11, derive an expression for the rotational inertia of this disk around an axis at theedge of the disk and perpendicular to the disks surface.
A top has moment of inertia 3.2104kgm2 and radius 4.0 cm from the center of mass to the pivot point. If it spins at 20.0 rev/s and is precessing, how many revolutions does it precess in 10.0 s?
A yo-yo can be thought of a solid cylinder of mass m and radius r that has a light string wrapped around its circumference (see below). One end of the string is held fixed in space. If the cylinder falls as the string unwinds without slipping, what is the acceleration of the cylinder?
You have a grindstone (a disk) that is 90.0 kg, has a 0.340-m radius, and is turning at 90.0 rpm, and you press a steel axe against it with a radial force of 20.0 N. (a) Assuming the kinetic coefficient of friction between steel and stone is 0.20, calculate the angular acceleration of the grindstine. (b) How many turns will the stone make before coming to rest?
A solid cylinder of radius 10.0 cm rolls down an incline with slipping. The angle of the incline is 30 . The coefficient of kinetic friction on the surface is 0.400. What is the angular acceleration of the solid cylinder? What is the linear acceleration?
A diver off the high board imparts an initial rotation with his body fully extended before going into a tuck and executing three back somersaults before hitting the water. If his moment of inertia before the tuck is 16.9kgm2 and after the tuck during the somersaults is 4.2kgm2 , what rotation rate must he impart to his body directly off the board and before the tuck if he takes 1.4 s to execute the somersaults before hitting the water?
A boy rides his bicycle 2.00 km. The wheels have radius 30.0 cm. What is the total angle the tires rotate through during his trip?
Consider the 12.0 kg motorcycle wheel shown in Figure 10.38. Assume it to be approximately an annular ring with an inner radius of 0.280 m and an outer radius of 0.330 m. The motorcycle is on its center stand, so that the wheel can spin freely. (a) If the drive chain exerts a force of 2200 N at a radius of 5.00 cm, what is the angular acceleration of the wheel? (b) What is the tangential acceleration of a point on the outer edge of the tire? (c) How long, starting from rest, does it take to reach an angular velocity of 80.0 rad/s? Figure 10.38 A motorcycle wheel has a moment of inertia approximately
A baseball pitcher throws the ball in a motion where there is rotation of the forearm about the elbow joint as well as other movements. If the linear velocity of the ball relative to the elbow joint is 20.0 m/s at a distance of 0.480 m from the joint and the moment of inertia of the forearm is 0.500kg-m2 , what is the rotational kinetic energy of the forearm?
A diver goes into a somersault during a dive by tucking her limbs. If her rotational kindetic energy is 100 J and her moment of inertia in the tuck is 9.0kgm2 , what is her rotational rate during the somersault?
A neutron star of mass 21030kg and radius 10 km rotates with a period of 0.02 seconds. What is its rotational kinetic energy?
A uniform rod of length L and mass M is held vertically with one end resting on the floor as shown below. When the rod is released, it rotates around its lower end until it hits the floor. Assuming the lower end of the rod does not slip, what is the linear velocity of the upper end when is hits the floor?