FRICTION
... an object through a fluid. (water, air) Fluid friction INCREASES as speed of object INCREASES. Fluid friction on an object moving through the air is known as AIR RESISTANCE ...
... an object through a fluid. (water, air) Fluid friction INCREASES as speed of object INCREASES. Fluid friction on an object moving through the air is known as AIR RESISTANCE ...
Practice exam 2, Mechanics ch. 0-9
... total force acting on them as a function of time. You may wish to check (not for credit) that your units come out right. ...
... total force acting on them as a function of time. You may wish to check (not for credit) that your units come out right. ...
Class Notes Forces
... Law 3: Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first. Newton's 3rd law is commonly written "for every action there is an equal and opposite reaction". This law can be tricky, because it easy to confuse action and reaction for ...
... Law 3: Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first. Newton's 3rd law is commonly written "for every action there is an equal and opposite reaction". This law can be tricky, because it easy to confuse action and reaction for ...
I. Force, Mass, and Acceleration
... which would hit first? Neither – same time. º True gravity on the bowling ball is greater but they hit at the same time. º This is because more force is needed to change the velocity of the bowling ball and that cancels out gravity. ...
... which would hit first? Neither – same time. º True gravity on the bowling ball is greater but they hit at the same time. º This is because more force is needed to change the velocity of the bowling ball and that cancels out gravity. ...
PSC1121Chap2-4
... Always acts in a direction to oppose motion When an object falls downward through the air, force of friction (air drag) acts upward When you pull on a crate and it slides across a floor, both your force and opposite force of friction affect the motion – when you pull hard enough to match friction, n ...
... Always acts in a direction to oppose motion When an object falls downward through the air, force of friction (air drag) acts upward When you pull on a crate and it slides across a floor, both your force and opposite force of friction affect the motion – when you pull hard enough to match friction, n ...
Centripetal Force and Projectiles
... Centripetal Force Centripetal force is any force that causes an object to follow a circular path. Centripetal means towards the center Demonstration: http://www.youtube.com/watch?v=Sav9vQ6 63u4 http://www.youtube.com/watch?v=Vpyx7Gu 0hos ...
... Centripetal Force Centripetal force is any force that causes an object to follow a circular path. Centripetal means towards the center Demonstration: http://www.youtube.com/watch?v=Sav9vQ6 63u4 http://www.youtube.com/watch?v=Vpyx7Gu 0hos ...
4.2 Weight and Drag Force
... questions about a scale in an elevator on Earth. What force would be exerted by the scale on a person in the following situations? a. The elevator moves upward at constant speed. ...
... questions about a scale in an elevator on Earth. What force would be exerted by the scale on a person in the following situations? a. The elevator moves upward at constant speed. ...
Laws of Motion Powerpoint
... of the Earth’s gravity because it is much smaller. • Where would gravity be less, at sea level or on top of a mountain? ...
... of the Earth’s gravity because it is much smaller. • Where would gravity be less, at sea level or on top of a mountain? ...
Falling Objects
... Note that, for a falling object, we always have y > 0 (because the object is above the surface of the earth), v < 0 (because v = dy/dt and y is decreasing), and a < 0 (because a = dv/dt and v is decreasing). The fact that a < 0 is a subtle point: The free—falling object speeds up as it falls, meanin ...
... Note that, for a falling object, we always have y > 0 (because the object is above the surface of the earth), v < 0 (because v = dy/dt and y is decreasing), and a < 0 (because a = dv/dt and v is decreasing). The fact that a < 0 is a subtle point: The free—falling object speeds up as it falls, meanin ...
printer-friendly sample test questions
... The acceleration due to gravity on the Moon is approximately 1.6 m/s2. A fourth object was found to have a weight of 144 Newtons, what would be the mass of this object? The mass would be A. 144 Kg, because mass and weight are the same on the Moon. B. 115 Kg, due to the low acceleration of gravity on ...
... The acceleration due to gravity on the Moon is approximately 1.6 m/s2. A fourth object was found to have a weight of 144 Newtons, what would be the mass of this object? The mass would be A. 144 Kg, because mass and weight are the same on the Moon. B. 115 Kg, due to the low acceleration of gravity on ...
2. Laws of Motion
... If the resultant force acting on an object is not zero, all the forces are said to be unbalanced. This forms the basis of Newton’s second law of motion, which states: If the forces on an object are unbalanced, two things about the object can change: the speed of the object may change – it may eith ...
... If the resultant force acting on an object is not zero, all the forces are said to be unbalanced. This forms the basis of Newton’s second law of motion, which states: If the forces on an object are unbalanced, two things about the object can change: the speed of the object may change – it may eith ...
pdf file - Wayne State University Physics and Astronomy
... Review Problem: A piece of metal is released under water. The volume of the metal is 50.0 cm3 and its specific gravity is 5.0. What is its initial acceleration? (Note: when v = 0, there is no drag force.) ...
... Review Problem: A piece of metal is released under water. The volume of the metal is 50.0 cm3 and its specific gravity is 5.0. What is its initial acceleration? (Note: when v = 0, there is no drag force.) ...
HS-SCI-CP -- Chapter 8- Fluid Mechanics
... Imagine that you submerge a brick in a container of water, as shown in Figure 2. A spout on the side of the container at the water's surface allows water to flow out of the container. As the brick sinks, the water level rises and water flows through the spout into a smaller container. The total volu ...
... Imagine that you submerge a brick in a container of water, as shown in Figure 2. A spout on the side of the container at the water's surface allows water to flow out of the container. As the brick sinks, the water level rises and water flows through the spout into a smaller container. The total volu ...
Test Review - Ms. Gamm
... 8. The two blocks of masses M shown above initially travel at the same speed v but in opposite directions. Momentum is conserved as they collide and stick together. How much mechanical energy is lost to other forms of energy during the collision? a. zero b. ½Mv2 c.Mv2 d. 34 Mv2 e. 23 Mv2 9. A 5kg ba ...
... 8. The two blocks of masses M shown above initially travel at the same speed v but in opposite directions. Momentum is conserved as they collide and stick together. How much mechanical energy is lost to other forms of energy during the collision? a. zero b. ½Mv2 c.Mv2 d. 34 Mv2 e. 23 Mv2 9. A 5kg ba ...
Forces and Motion
... – A force that results when the net force acting on an object is not equal to zero – When an unbalanced force acts on an object, the object accelerates – Forces in opposite direction can also combine to produce an unbalanced force (tug of war with a winner) ...
... – A force that results when the net force acting on an object is not equal to zero – When an unbalanced force acts on an object, the object accelerates – Forces in opposite direction can also combine to produce an unbalanced force (tug of war with a winner) ...
Jeopardy
... motion,” do forces act alone or in pairs? • Answer: Forces act in pairs. For every “Action force,” there is an opposite and equal “Reaction force!” ...
... motion,” do forces act alone or in pairs? • Answer: Forces act in pairs. For every “Action force,” there is an opposite and equal “Reaction force!” ...
What are forces?
... 1. What is the acceleration on a mass of 50kg if a force of 10N is applied? 2. An object accelerates due to gravity at a rate of 10m/s/s. If its mass is 15kg, what force is acting on the mass? ...
... 1. What is the acceleration on a mass of 50kg if a force of 10N is applied? 2. An object accelerates due to gravity at a rate of 10m/s/s. If its mass is 15kg, what force is acting on the mass? ...
Buoyancy
In science, buoyancy (pronunciation: /ˈbɔɪ.ənᵗsi/ or /ˈbuːjənᵗsi/; also known as upthrust) is an upward force exerted by a fluid that opposes the weight of an immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus the pressure at the bottom of a column of fluid is greater than at the top of the column. Similarly, the pressure at the bottom of an object submerged in a fluid is greater than at the top of the object. This pressure difference results in a net upwards force on the object. The magnitude of that force exerted is proportional to that pressure difference, and (as explained by Archimedes' principle) is equivalent to the weight of the fluid that would otherwise occupy the volume of the object, i.e. the displaced fluid.For this reason, an object whose density is greater than that of the fluid in which it is submerged tends to sink. If the object is either less dense than the liquid or is shaped appropriately (as in a boat), the force can keep the object afloat. This can occur only in a reference frame which either has a gravitational field or is accelerating due to a force other than gravity defining a ""downward"" direction (that is, a non-inertial reference frame). In a situation of fluid statics, the net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body.The center of buoyancy of an object is the centroid of the displaced volume of fluid.