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Q1. Florence the dog who weighs 140 Newton's stands on the bathroom scale in an elevator. What is the scale reading while an elevator accelerates downward at 2.00 m/s^2?
Q2. When an object is rolling without slipping, rolling friction force is much less than the friction force when an object is sliding; the silver dollar will roll on its edge much farther than it will slide on its flat side. When an object is rolling without slipping on the horizontal surface, we can approximate friction force to be zero, so that and are around zero and and are approximately constant. Rolling without slipping means and. If an object is set in motion on the surface without these equalities, sliding (kinetic) friction will act on object as it slips until rolling without slipping is established. A solid cylinder with mass and radius, rotating with angular speed about an axis throughout its center, is set on the horizontal surface for which the kinetic friction coefficient is.
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A hollow cylinder of radius and height has a total charge uniformly distributed over its surface. The axis of the cylinder coincides with the z axis, and cylinder is centered at the origin.
A converging lens has a focal length of f = 22.0 cm. An object is placed 41.0 cm from the lens. Find the size of the image in cm if the object has a height of 4 cm. express answer with one decimal place.
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A man pushes a lawnmower for 13.1 m along a handle that makes a 28.2° angle with the ground. He pushes with a force of 42.8 N even as the force of friction between the lawnmower and the ground is 13.7 N.
A 12.0-{rm kg} box resting on a horizontal, frictionless surface is attached to a 5.00-{rm kg} weight by a thin, light wire that passes over a frictionless pulley). The pulley has the shape of a uniform solid disk of mass 2.40 {rm kg} and diameter 0...
If the elevator's descending speed is measured at 10 m/s at a given point, but its speed is decreasing by 2.7 m/s2, what is a force exerted by the scale.
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