Physics

Physics, 07.12.2019 00:31, Bgreene2377

Part ii-brainstorm with your group and come up with 2 variables that you think will affect the frictional force that arises from dragging the block at a constant speed. 4 steps and clearly identify the variable you are testing.

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Physics, 30.07.2019 00:20, kyronthomas52

Acyclist is riding his bike at a constant speed of s m/s, and experiences a frictional force between the bike and sidewalk of 100 n. the cyclist then changes his speed to 10 m/s what effect does this increase in speed have on the frictional force between the bike and sidewalk? a) the frictional force doubles because when speed increases frictional force also increases b) the frictional force becomes half of what it was because when speed increases frictional force decreases c) the frictional force increases but does not double because although friction increases with the increasing speed it does not increase as fast d) the frictional force between the bike and sidewalk stays the same because speed does not affect frictional force

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Physics, 01.10.2019 19:00, nave1008

The direction of the frictional forces is something you need to think about carefully. the best rule of thumb is the following: the direction of the frictional force is such that it tries to keep the two surfaces from slipping. in each of these situations, what would be the direction of the frictional force? in cases of the inclines, consider left to be down and to the left (parallel to the incline) and right to be up and to the right (parallel to the ) a coffee mug is resting on the top of a car. the car is moving to the right and accelerating to the right. consider the frictional force of the roof of the car on the coffee mug. left, down, right, or up? (2) a book is being pressed against the wall as shown to keep it from falling. the book is stationary. left, down, right, or up? (3) consider the frictional force between the book and the wall. a block is placed on an incline as shown and the block doesn't move.left, down, right, or up? (4) consider the frictional force between the block and the incline. presume the surface of the incline to be more horizontal that vertical.a block is being pushed to the right along an incline as shown. left, down, right, or up? (5) consider the frictional force between the block and the incline.a coffee mug is sliding to the right across a tabletop. left, down, right, or up?

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Physics, 29.11.2019 06:31, issagirl05

A2.0-n force acts horizontally on a 10-n block that is initially at rest on a horizontal surface. the coefficient of static friction between the block and the surface is 0.50. suppose that the block now moves across the surface with constant speed under the action of a horizontal 3.0-n force. which one of the following statements concerning this situation is false? the net force on the block is zero newtons. the coefficient of kinetic friction between the block and the surface is 0.30. the frictional force on the block has magnitude 3.0 n. the direction of the total force that the surface exerts on the block is vertically upward. the block is not accelerated.

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