There are separate answers for each part of this situation: 1. As the mover lifts the piece of furniture to the dolly, s/he will probably use a normal force (no friction) against the bottom of the piece, while at the same time pressing and lifting against the side of the piece, which would require static friction. 2. As the mover pushes the piece of furniture on the dolly across the floor, s/he would probably use only a normal force against the side of the piece (no friction), but there might be some static friction force involved if s/he is pushing at an angle against the piece. 3. As the piece of furniture moves with the dolly under it, it is pressing down on the dolly with a normal force and using static friction to bring the dolly along in the same direction the piece is moving. 4. As the dolly frame presses down on the axle of each wheel, it exerts a normal force on the bearing of the axle. There is probably no friction force involved. 5. As the axle turns within the bearing, there is a combination of static and kinetic friction as the ball bearings turn and slip inside the bearing. 6. As the wheel presses down on the floor, the floor presses up on the wheel with the same amount of normal force. The static friction force from the floor pulls back on the surface of the wheel at the point of contact and causes the wheel to turn.
Yes, a mover is a noun. It is a person who moves things, such as furniture.
No, it is a noun. It is used as a noun adjunct in terms such as furniture mover and furniture polish.
A mover.
A mover
A mover.
Wheels reduce friction by rolling instead of sliding, making it easier to move heavy objects. This creates less resistance, requiring less force to initiate and sustain movement. Wheels also distribute the weight of the object more evenly, reducing strain on the mover.
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The mover is likely using sliding friction, where two surfaces slide against each other, to make his job easier by reducing the resistance between the object being moved and the ground. This type of friction allows for smoother movement of objects over surfaces.
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The force the mover needs to apply to keep the box moving to the right at 1 m/s is 20 N to overcome the friction force acting to the left on the box. So, the total force applied by the mover in the right direction should be greater than 20 N to maintain the constant velocity of 1 m/s.
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