Which measure would not be useful to help you determine the change in angular velocity when the torque on a fishing reel is increased?  a. the radius of the reel b. the amount of line that unspools c. the angular momentum of the fishing line d. the time it takes the line to unspool

Q: A wall clock has a second hand 25.0 cm long.  A.) what is the radial acceleration of the tip of this…

A: Length of Second Hand ,   l = 25 cm                                                 ⇒25 x 10-2m

Q: 1. Balls are attached to light rods and can move in horizontal circles as shown below. Rank in…

A: τA = rF τB = r(2F) = 2Fr τC = 2rF  τD = (2r)(2F) = 4rF

Q: Explain each sentence if it is true or false.  A. Linear momentum is conserved when there is a net…

A: The explanation of the following problem,

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A: Given data: In the given problem, bucket of ice is move in rotational motion. When ice starts…

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Q: A 75 kg uniform plank is supported by the floor at one end and by a vertical rope at the other end…

A: Given : Mass of plank  m1 = 75 kg Mass of person m2 = 32 kg  (a) FREE BODY DIAGRAM : Net force and…

Q: 2. A marble ball has a mass of 100 g and diameter of 1 inch. Calculate the rotational inertia of the…

A: Write the formula for the moment of inertia of the marble ball about an axis through its center.

Q: Bea saw Leia struggling to loosen the bolt of the wheel of her car. She then noticed that she was…

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Q: 3. A merry-go-round at a playground is rotating at 4.0 rev/min. Three children jump on and increase…

A: When children jump on the playground, they form a system. Since there is no external torque applied,…

Q: 1. A record and turntable are rotating without friction at 0.6 revolutions per second. A piece of…

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Q: Q1. You designed an intravascular blood pump to help patients with heart failure. The pump design is…

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Q: The figure shows a jet engine suspended beneath the wing of an airplane. The weight  of the engine…

A: Given data  Weight, w=10400 N Thrust, T= 54500 N L=2.5 m Torque is defined as…

Q: Which measure would not be useful to help you determine the change in angular velocity when the…

A: By using the angular accelerationα=∆ω∆t∆ω=α∆tand we can get the angular acceleration by using the…

Q: While putting in a new ceiling, Jake uses a drill to put screws into the drywall. The screws rotate…

A: Screw rotating clock wise as they fit into the ceiling

Q: Hi there. I need some help with this question. A car with 56-cm -diameter tires accelerates…

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Q: The tune-up specifications of a car call for the spark plugs to be tightened to a torque of 36 Nm.…

A: Given, Torque τ=36 Nm Wrench length s = 21 cm = 0.21 m Angle =125∘   We know the expression for…

Q: A 0.140-kg wooden rod is 1.20 m long and pivots at one end. It is held horizontally and then…

A: a) he expression for the torque is

Q: Explain why the student holding the pole is smarter than the other student. Be sure to use the…

A: answer student holding the the pole is smarter then  the other student because (1) it increases…

Q: A 1.0 kg ball and a 2.0 kg ball are connected by a 0.90-m-long rigid, massless rod. The rod is…

A: Initial angular velocity ωi = 15 rpm  1 rpm = 6.283 rad/s  => ωi = 15 × 6.283  => ωi = 94.245…

Q: An electric fan makes 300 revolutions per minute. If it comes to a stop after 12 secs, what is the…

A: Given: The initial angular speed is 0 rad/s. The final angular speed is 300 revs/s. The time…

Q: Gear A, which turns clockwise, meshes with gear B, which turns counterclockwise. When more force is…

A: Gear A when turns clockwise, it exerts equal force on gear B which is applied to it and hence, gear…

Q: A 2000-kg Ferris wheel accelerates from rest to an angular speed of 2.0 rad/s in 12 seconds.…

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Q: You enter a revolving door that is not moving. Explain where and how you should push to produce a…

A: Torque is the force applied to a rotating or revolving body at a distance from the pivot. Torque is…

Q: A bicycle mechanic is checking a road bike's chain. They apply force F = 48 N to a pedal at the…

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Q: A 55 kg diver stands motionless and perfectly tangentially on the very far end of a 16 - foot -long…

A: The given values are,

Q: 10. A coin is placed 10 cm from the axis of a rotating disk. The disk starts from rest and…

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Q: A force of 10 N is needed to set a 250 N box across the floor. What is the coefficient of friction…

A: Please note : As per answering guidelines I can answer the first question only. Since this is not a…

Q: A solid, uniform, spherical boulder (I= 2/5 MR2) starts from rest and rolls down a 50 m hill, as…

A: Given that, A solid, uniform, spherical boulder starts from rest and rolls down a 50 m hill.  The…

Q: A mechanic changing the spark plugs in a car notes that the instruction manual calls for a torque…

A: Note:- The image related to the above question is not provided.

Q: Ethan and Rebecca are riding on a merry-go-round. Ethan rides on a horse at the outer rim of the…

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Q: A bicycle mechanic is checking a road bike's chain. He applies force FF = 21 NN to a pedal at the…

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Q: angular speed of the display at the end of the second revolution

A: Angular Velocity at the begining of first revolution, ω0=θt=2π5.0 sec=1.256 rad.s-1Angular…

Q: Torque and Force  How much torque do you need to apply to a 1kg disk of radius 10cm to get an…

A: The disk is rotating about an axis through its center perpendicular to the face of the disk.

Q: basketball is being pushed by two players during tip-off. John exerts an upwards force of 15N at a…

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Q: Lever Arm A bolt on a car engine needs to be tightened with a torque of 35 N-m. You use a 25-cm-long…

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Q: The diagram shows a top view of a child on a merry-go-round that is rotating counterclockwise.…

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Q: Figure below shows a rod that is free to rotate about its center of mass. A force F, = 20 N is d, =…

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Q: 2) In the pulley/string system shown at the right, the radius of pulley A is 2.0 cm and the radius…

A: Given data: The radius of the pulley A is rA=2.0 cm. The radius of pulley B is rB=5.0 cm. The speed…

Q: A string is wrapped around a uniform solid cylinder of radius r(Figure 1). The cylinder can rotate…

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Q: Pulley A Pulley B Spring Scale Spring Scale Figure 1 (a) Two identical spring scales are each…

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Q: Two window washers, Bob and Joe, are on a 3.00-m-long, 345-N scaffold supported by two cables…

A: Given data:  Weight of the scaffold, W s =345N   Weight of the Joe, W J = 1000N   Weight of the Bob,…

Q: Pulley A Figure 2 (c) A block of mass M is attached to Pulley A , as shown in Figure 2. The block is…

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Q: Using the conservation of angular momentum principle, explain why and how changes in the…

A: Angular momentum is defined as  L=Iω I=moment of inertia=mr2 ω=angular velocitynow let us look at…

Q: Ladybug A begins walking towards the center of the disk. What happens to the angular speed of the…

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Q: What is the torque by the fire extinguisher about the center of the seesaw, in N.m? Use g = 10 m/s2.…

A: Mass of fire extinguisher (m) = 5kg  Distance (r) = 6m  Torque is product force and lever arm…

Q: A bicycle mechanic is checking a road bike’s chain. He applies a 45 N force to a pedal at the angle…

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Q: A group of physics students, each of whom can pull with 100lb of force, is planning to topple a…

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Q: Ferrari Testarossa uses a single lug nut. The bolts on a normal car wheel require tightening to a…

A: required torque = 90 N.m length of wrench (d) = 30 cm = 0.30 m