When an object moves from initial point to final point on a floor. The thermal energy...
an 8kg flywheel of radius r is initially at rest. assume the radius of the gyration kG= 0.12m and the radius of the flywheel r = 0.125m. an object B also of mass 8 kg is attached to a cord that is wrapped around a periphery of the flywheel. the fly wheel starts to rotate clockwise with angular velocity. the rotation is resisted by a constant frictional torque mf in the bearing 1Nm. use the work energy principle to determine...
Parallel Axis Theorem: I = ICM + Md Kinetic Energy: K = 2m202 Gravitational Potential Energy: AU = mgay Conservation of Mechanical Energy: 2 mv2 + u = žmo+ U Rotational Work: W = TO Rotational Power: P = TO Are Length (angle in radians, where 360º = 2a radians): S = re = wt (in general, not limited to constant acceleration) Tangential & angular speeds: V = ro Frequency & Period: Work-Energy Theorem (rotational): Weet = {102 - 10...
Question 12 (1 point) A 50.0-kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 20.7° below the horizontal is applied to the box. The coefficient of kinetic friction between the box and the surface is 0.300. What is the acceleration of the box? OA) 3.54 m/s2 OB) 5.14 m/s2 OC) 2.84 m/s2 OD) 1.21 m/s2 E) 1.77 m/s2 Question 13 (1 point) A 50.0-kg box is resting on a horizontal floor....
1. A solid cylinder has a mass of 5 kg and a radius of 30 cm. A torque of 40 Nm is applied to the cylinder. What will be its angular acceleration? a) 37.5 rad/s2 b) 59.3 rad/s2 c) 89.0 rad/s2 d) 178 rad/s2 2. When an object is in static equilibrium a) the net force on it is zero b) the net torque on it is zero c) the net force and net torque are zero d) not enough...
Work out the highlighted questions (3-6) clearly and with units, please. Thanks! 4/5 a the minimum kinetic energy at the apping point? (C) Use conservation of energy to determine the minimum angular velocity of the block just after the collision, (d) then use conservation of angular momentum during the collision to find the initial speed of the bullet vo. (Hint: Ignore the mass of the bullet after the collision. The moment of inertia of the cube about its bottom-right edge...
Question 1 An object has an initial negative velocity of your last digit of the university ID +1) m/s If it has a positive acceleration of 0 075 m/s2, how will velocity be immediately affected? Not yet answered Marked out of 2.00 4 5 6 P Flag question Select one O a Velocity will decrease OD Velocity will increase OC Velocity will be constant d Velocity will either increase or decrease 10 Last digit = 7
7. When an object undergoes uniform circular motion, the direction of the acceleration is a. directed tangent to the circle b. directed toward the centre of the circle c. changing depending on its position in the circle d. directed outward from the centre of the circle e. opposite to the direction of centripetal force car travels with a constant speed around a curve in the road. The curve is banked Which of the following forces is in the direction of...
. Question 9 4 pts Suppose a disk of radius R = 6 cm is rotating with an angular velocity w = 7 rad/s. What is the speed of a point on the rim of the disk? 200 m/s O 0.84 m/s 14 m/s - 168 m/s O 42 m/s O 0.42 m/s 1.68 m/s 0.06 m/s 0.72 m/s Question 10 4 pts Suppose the angular velocity of a disk of radius R = 6 cm increases uniformly from 14...
Consider the following mass distribution where the x- and y-coordinates are given in meters: 5.0 kg at (0.0, 0.0) m, 3.3 kg at (0.0, 3.5) m, and 4.0 kg at (2.9, 0.0) m. Where should a fourth object of 7.5 kg be placed so that the center of gravity of the four-object arrangement will be at (0.0, 0.0) m? A 1.25 kg solid, uniform disk rolls without slipping across a level surface, translating at 4.00 m/s. If the disk's radius...
Analysis Model Tutorial A4.00-m length of light nylon cord is wound around a uniform cylindrical spool of radius 0.500 m and mass 1.00 kg. The spool is mounted on a frictionless axle and is initially at rest. The cord is pulled from the spool with a constant acceleration of magnitude 2.30 m/s? (a) How much work has been done on the spool when it reaches an angular speed of 4.00 rad/s? (b) How long does it take the spool to...