A yo-yo has a rotational inertia of 977 g

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genius_generous answered 4 months ago

A yo-yo has a rotational inertia of 900 g · cm2 and a mass of 100...

A yo-yo has a rotational inertia of 900 g · cm2 and a mass of 100 g. Its axle radius is 3.2 mm, and its string is 120 cm long. The yo-yo rolls from rest down to the end of the string. (a) What is the magnitude of its linear acceleration? (b) How long does it take to reach the end of the string? As it reaches the end of the string, what are its (c) linear speed, (d) translational...

The propeller of a plane has a rotational inertia of 890 kg*m2. Each blade has a...

The propeller of a plane has a rotational inertia of 890 kg*m2. Each blade has a length of 3.3 m. The propellor starts from rest and reaches a final angular speed of 16 rad/s in only 8 seconds. a) What was the angular acceleration of the propeller? b) What was the net torque exerted on the propeller while it was accelerating? c) When t = 4 s, what was ω for the propeller? d) When t = 4 s, through...

what Connects claim to theory in rotational motion Includes theoretical model for rotational inertia of a...

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2. Which has more rotational inertia: A solid, uniform sphere of mass 100kg, or a mostly...

2. Which has more rotational inertia: A solid, uniform sphere of mass 100kg, or a mostly hollow spherical shell of mass 100kg? a.They both have the same rotational inertia b.Solid Sphere c.Hollow Sphere 3.If a bicycle starts from rest and is pedaled normally until the bike is moving at 6 meters per second across level ground, what kinds of energy have its tires been given? (Select all that apply) a.Rotational Kinetic Energy b.Translational Kinetic Energy c.Gravitational Potential Energy d.Elastic Potential...

A disc with radius 0.060 m and rotational inertia 0.061 kg.m^2 has a rope wrapped around...

A disc with radius 0.060 m and rotational inertia 0.061 kg.m^2 has a rope wrapped around its parameter. The other end of the rope is holding a 0.20 kg mass. The mass is held at 1.0 m above the floor. You release the mass from rest. This causes the disc to spin and the mass to fall. How long does it take the mass to fall to the ground? Hint: use torque and angular acceleration. A solid sphere of radius...

2) A merry-go-round has a radius of 1.75 m and a rotational inertia of 600 km-m2....

2) A merry-go-round has a radius of 1.75 m and a rotational inertia of 600 km-m2. A child pushes the merry-go-round with a constant force of 102 N applied at the edge and parrallel to the edge. A frictional torque of 32 N.m acts at the axel of the merry-go-round. a) What is the torque applied by the child? b) What is the rotational acceleration of merry-go-round? c) The child stops pushing after 18 seconds, if merry-go-round had started from...

A) Estimate the rotational inertia of a 60-kg ice skater by considering her body to be...

A) Estimate the rotational inertia of a 60-kg ice skater by considering her body to be a cylinder. Assume she's holding her arms tight to her torso, so they don't contribute significantly to her rotational inertia. Suppose that the distance from the center of rotation to the shoulders is 0.2 mm. B) Estimate the rotational inertia if she extends her arms fully. Suppose that the arm span of the ice skater is 1.6 mm and the arms make up 15...

Rotational Inertia –Rolling Kinetic Energy. A solid sphere, a hollow sphere, a hollow cylinder, and a...

Rotational Inertia –Rolling Kinetic Energy. A solid sphere, a hollow sphere, a hollow cylinder, and a solid cylinder, all of with same mass (M=0.25 kg ) and radius(R= 0.20 m) – are placed at the top of an incline at height (h= 1.5 m ). All the objects are released from rest at the same moment to roll down without slipping. Hint: search for the rotational inertia formula for each of the rolling object first. Then calculate each of them...

Starting from the basic definition of moment of inertia (eq 9.15), evaluate by integration the rotational...

Starting from the basic definition of moment of inertia (eq 9.15), evaluate by integration the rotational inertia of a 50-lb hollow cylinder flywheel about the cylinder axis, whose outer diameter is 16-in and inner diameter is 15-in?

1.) A playground merry-go-round with a radius of 1.75 m and a rotational inertia of 124.5...

1.) A playground merry-go-round with a radius of 1.75 m and a rotational inertia of 124.5 kgm2 is stationary. A robot with a mass of 32.5 kg gets on and walks around the edge of the merry-go-round. How many revolutions around the merry-go-round must the robot make in order for the merry-go-round to make two full revolutions? 2.) A student has an idea for a special record player that uses no electricity. The base is a circular turntable that floats...

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