A typical ten-pound car wheel has a moment of inertia of about 0.35 kg-m². The wheel rotates about the axle at a constant angular speed making 60.0 full revolutions in a time interval of 7.00. Part A What is the rotational kinetic energy K of the rotating wheel? Express your answer in joules. View Available Hint(s) 15] ΑΣΦΑ Submit J
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- d lw Biology Cab rofates at angular ES,4348h4+ 36.656 YORK COLLEGE of The City University of New York Name 2) A potter's wheel is uniform circular disk of mass 45.00kg and radius 0.450m. A electric motor brings wheel from rest to 70.00rev/min. a) What is the moment of inertia of the potter's wheel? b) How much work is done by the motor? c) If constant torque is acting on the wheel is 9,20N.m, how many revolution does it make? m=1,85K8 rこo.450 F= 9.20NA 0.74-m-diameter solid sphere can be rotated about an axis through its center by a torque of 12.8 m * N which accelerates it uniformly from rest through a total of 160 revolutions in 16.0 s. Part A What is the mass of the sphere? Express your answer to two significant figures and include the appropriate units. M = O μA Submit Value Units Request Answer ?A 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 Answer
- A bowling ball of mass 7.24 kgkg and radius 10.5 cmcm rolls without slipping down a lane at 3.30 m/sm/s . Part A Calculate its total kinetic energy. Express your answer using three significant figures and include the appropriate units.A lawn mower has a flat, rod-shaped steel blade that rotates about its center. The mass of the blade is 0.65 kg and its length is 0.55 m. You may want to review (Pages 314 - 318). Part A What is the rotational energy of the blade at its operating angular speed of 3460 rpm ? Express your answer using two significant figures. Kr= Submit Part B v Templates Symbols undo redo reset keyboard shortcuts help y = Request Answer If all of the rotational kinetic energy of the blade could be converted to gravitational potential energy, to what height would the blade rise? Express your answer using two significant figures. J Templates Symbols undo redo reset keyboard shortcuts help m。 A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.871 m and 2.77 kg, respectively. When the propellor rotates at 529 rpm (revolutions per minute), what is its rotational kinetic energy K? K= 4123.5 Incorrect
- Cons A constant torgue of 25 m - N is applied to the rim of a 15-kg uniform disk of radius 0.30 m. Part A What is the angular speed of the disk about an axis through its center after it rotates 2.0 revolutions from rest? Express your answer using two significant figures. Ην ΑΣφ rad/s Previous Answers Request Answer Submit X Incorrect; Try Again; 5 attempts remainingI 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 AnswerConstants A string is wrapped around a uniform solid cylinder of radius r = 0.6 m, as shown in (Figure 1). The cylinder can rotate freely about its axis. The loose end of the string is attached to a block. The block and cylinder each have mass m = 8.5kg Part A Find the magnitude a of the angular acceleration of the cylinder as the block descends. ΑΣφ Figure K1 of 1 Submit Request Answer Provide Feedback Next >
- Can you help me with this problem?Just need part BA discus thrower starts from rest and begins to rotate with a constant angular acceleration of 2.4 rad/s2rad/s2 . Part A How many revolutions does it take for the discus thrower's angular speed to reach 5.0 rad/srad/s ? Express your answer using two significant figures. Part B How much time does this take? Express your answer using two significant figures.