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- 5. A 108 cm, 0.73 kg golf club is swung from rest for 0.5 seconds with a constant acceleration of 10 rad/s2.a. What is the angular velocity of the club head when it impacts the ball? b. What is the angular momentum of the club head when it impacts the ball? please show all steps, work, and formulasA merry-go-round on a playground consists of a horizontal solid disk with a weight of 795 N and a radius of 1.53 m. A child applies a force 50.5 N tangentially to the edge of the disk to start it from rest. What is the kinetic energy of the merry-go-round disk (in J) after 3.05 s? J Submit AnswerD A light rigid rod with masses attached to its ends is pivoted about a horizontal axis as shown. A. What is the moment of inertia of the rod-mass system? -22 B. What is the net torque acting on the system? (Pivot Point 3M, Mo C. What is the angular acceleration of the system?
- I Review I Constants You are designing a rotating metal flywheel that will be used to store energy. The flywheel is to be a uniform disk with radius 35.0 cm. Starting from rest at t = 0, the flywheel rotates with constant angular acceleration 3.00 rad/s? about an axis perpendicular to the flywheel at its center. Part A If the flywheel has a density (mass per unit volume) of 8600 kg/m³, what thickness must it have to store 800 J of kinetic energy at t = 8.00 s? Express your answer with the appropriate units. HA h = Value Units Submit Request AnswerA 1550-kg car rounds a circular turn of radius 155 m, toward the left, on a horizontal road. Its angular momentum about the center of the turn has magnitude 2.86 x 10 kg m²/s. What is the direction of the car's angular momentum? O toward the center of the turn Overtically downward Submit Previous Answers vertically upward away from the center of the turn ✓ Correct Part B What is the speed of the car? Express your answer with the appropriate units. V= Part C for Part B for Part B undo for Part B redo for Part B reset for Part B keyboard shortcuts for Part B help for Part B Value Submit LfinaF What is the magnitude of the car's angular momentum about the center of the turn, once it's exited the turn and is on a straight stretch of the road? Express your answer with the appropriate units. Submit Units Request Answer for Part C for Part Cundo for Part C redo for Part C reset for Part C keyboard shortcuts for Part C help for Part C Units Value Request AnswerA merry-go-round accelerates from rest to 0.70 rad/s in 30 s. Part A Assuming the merry-go-round is a uniform disk of radius 8.0 m and mass 3.20×104 kg , calculate the net torque required to accelerate it. Express your answer to two significant figures and include the appropriate units.
- I Re You're carrying a 3.6-m-long, 24 kg pole to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 cm from its tip. Part A For the steps and strategies involved in solving a similar problem, you may view a Video Tutor Solution. How much force must you exert to keep the pole motionless in a horizontal position? Express your answer in newtons. Vo AE F = N Submit Previous Answers Request AnswerA merry-go-round with a moment of inertia equal to 1250 kg · m? and a radius of 2.7 m rotates with negligible friction at 1.71 rad/s.A child initially standing still next to the merry-go-round jumps onto the edge of the platform straight toward the axis of rotation causing the platform to slow to 1.29 rad/s Part A What is her mass? Express your answer using two significant figures. ? kg m = Submit Request AnswerA Moving to another question will save this response. Question 6 The angular momentum of a system is conserved only if O the angular velocity is a function of time. O the sum of the external torques equals the sum of the internal torques O the moment of inertia of the system is constant O the sum of the external torques is zero. O the sum of the internal torques is zero.
- A 6 cm diameter, 550 g solid sphere is released from rest at the top of a 2.0 m long, 35° incline. It rolls, without slipping, to the bottom. a. What is the sphere’s angular velocity at the bottom of the incline?b. What fraction of its kinetic energy is rotational?A solid uniform 3.25-kg cylinder, 65.0 cm in diameter and 12.4 cm long, is connected to a 1.50-kg weight over two massless frictionless pulleys as shown in the figure below (Figure 1). The cylinder is free to rotate about an axle through its center perpendicular to its circular faces, and the system is released from rest. Figure 3.25 kg 1 of 1 1.50 kg Part A How far must the 1.50-kg weight fall before it reaches a speed of 2.40 m/s? Express your answer in meters. 17| ΑΣΦ d = Submit Part B Request Answer How fast is the cylinder turning at this instant? Express your answer in radians per second. VE ΑΣΦ) ? ? mP1 please help me with the answer and full solution