Honors Physics – Midterm Review 2010
... 32. Safety engineers estimate that an elevator “car” can hold 20 persons of 75kg average mass. The car itself has a mass of 500kg. Tensile strength tests show that the cable supporting the car can tolerate a maximum force of 29.6kN. What is the greatest acceleration that the elevator’s motor can pr ...
... 32. Safety engineers estimate that an elevator “car” can hold 20 persons of 75kg average mass. The car itself has a mass of 500kg. Tensile strength tests show that the cable supporting the car can tolerate a maximum force of 29.6kN. What is the greatest acceleration that the elevator’s motor can pr ...
ANSWERS Zoink Questions: Force and Motion Test
... NO because using the above speeds are 2m/s and at time 1 the speed is 1/1 = 1m/s = changing speeds Using the table above: Where is the object at rest? ...
... NO because using the above speeds are 2m/s and at time 1 the speed is 1/1 = 1m/s = changing speeds Using the table above: Where is the object at rest? ...
3.5 Notes – Special Case 2: Circular Motion Q: What determines
... velocity and position vectors have to remain mutually perpendicular for there to be uniform circular motion. If not, you would get a speeding up-slowing down effect, which would then affect your change in position, accordingly. 3. The maintenance of ∆θ means that you have isosceles triangles for bot ...
... velocity and position vectors have to remain mutually perpendicular for there to be uniform circular motion. If not, you would get a speeding up-slowing down effect, which would then affect your change in position, accordingly. 3. The maintenance of ∆θ means that you have isosceles triangles for bot ...
Forces
... • A book resting on a table has the force of gravity pulling it toward the Earth, but the book is not moving or accelerating, so there must be opposing forces acting on the book. This force is caused by the table and is known as the normal force. . Normal Force is the force of an object pushing back ...
... • A book resting on a table has the force of gravity pulling it toward the Earth, but the book is not moving or accelerating, so there must be opposing forces acting on the book. This force is caused by the table and is known as the normal force. . Normal Force is the force of an object pushing back ...
NEWTON`S LAWS OF MOTION CARTOON TIME! Newton`s First Law
... A force is a push or a pull upon an object that results from its interaction with another object. Forces result from interactions! Some forces result from contact interactions (normal, frictional, tensional, and applied forces are examples of contact forces) and other forces are the result of action ...
... A force is a push or a pull upon an object that results from its interaction with another object. Forces result from interactions! Some forces result from contact interactions (normal, frictional, tensional, and applied forces are examples of contact forces) and other forces are the result of action ...
Part B: Force, Acceleration and Newton`s Second Law of Motion
... quarterback persists upon the ball to cause it to continue on its upward trajectory towards its peak. d. A sled slides down the hill and reaches the bottom where it gradually slows to a stop. Once on the level ground, the force of the hill persists upon the sled to allow it to continue its forward m ...
... quarterback persists upon the ball to cause it to continue on its upward trajectory towards its peak. d. A sled slides down the hill and reaches the bottom where it gradually slows to a stop. Once on the level ground, the force of the hill persists upon the sled to allow it to continue its forward m ...
SIMPLE HARMONIC MOTION
... In periodic motion, a body repeats a certain motion indefinitely, always returning to its starting point after a constant time interval and then starting a new cycle. Simple harmonic motion is periodic motion that occurs when the restoring force on a body displaced from an equilibrium position is pro ...
... In periodic motion, a body repeats a certain motion indefinitely, always returning to its starting point after a constant time interval and then starting a new cycle. Simple harmonic motion is periodic motion that occurs when the restoring force on a body displaced from an equilibrium position is pro ...
Section 8-2 Center of Mass
... Section 8-2 Center of Mass 11. Center of Mass – point at which all of the mass of the body can be considered to be concentrated when analyzing transitional motion. a. Regular shaped objects (i.e. sphere, cube) center of mass is at the geometric center of the object. i. Different for oddly shaped ob ...
... Section 8-2 Center of Mass 11. Center of Mass – point at which all of the mass of the body can be considered to be concentrated when analyzing transitional motion. a. Regular shaped objects (i.e. sphere, cube) center of mass is at the geometric center of the object. i. Different for oddly shaped ob ...
Chapter 4 Dynamics: Newton`s Laws of Motion
... • If object A exerts a force on object B, then object B exerts an oppositely directed force of equal magnitude on A. • Obsolete language: "For every action there is an equal but opposite reaction." • Important point: The two forces always act on different objects; therefore they can't cancel each ot ...
... • If object A exerts a force on object B, then object B exerts an oppositely directed force of equal magnitude on A. • Obsolete language: "For every action there is an equal but opposite reaction." • Important point: The two forces always act on different objects; therefore they can't cancel each ot ...
Circular motion
... a rigid object is located along the line for which it will balance. As shown below, when gravity is the only force acting on a rotating object, it will rotate around its center of mass (technically that point would be the object’s center of gravity, but for this book you can treat center of mass and ...
... a rigid object is located along the line for which it will balance. As shown below, when gravity is the only force acting on a rotating object, it will rotate around its center of mass (technically that point would be the object’s center of gravity, but for this book you can treat center of mass and ...
force - mrwignall
... molecules that leave large bumps and some leave smaller bumps, but all surfaces have bumps. • Microwelds occur when two bumpy surfaces are rubbed up against each other they stick together. ...
... molecules that leave large bumps and some leave smaller bumps, but all surfaces have bumps. • Microwelds occur when two bumpy surfaces are rubbed up against each other they stick together. ...
What is velocity?
... force acted on an object that’s already in motion? • It will change the speed or direction of the object. • Example: Your little brother is riding his tricycle. You run up behind him and give him a push. Your force adds to the existing force causing him to ...
... force acted on an object that’s already in motion? • It will change the speed or direction of the object. • Example: Your little brother is riding his tricycle. You run up behind him and give him a push. Your force adds to the existing force causing him to ...
Motion
... – Every object in the universe is attracted to every other object in the universe by a force that is directly proportional to the product of their masses and inversely proportional to the square of the distances between them. • F = G(m1m2)/d2 • G is a proportionality constant and is equal to 6.67 X ...
... – Every object in the universe is attracted to every other object in the universe by a force that is directly proportional to the product of their masses and inversely proportional to the square of the distances between them. • F = G(m1m2)/d2 • G is a proportionality constant and is equal to 6.67 X ...
force
... typically expressed as that formula, where: Force = mass x acceleration (N) (kg) (m/s2) • There are several relationships implied in this law: • The harder the force, the faster it will move (F ∝ a) • The bigger the object, the harder you have to push (F ∝ m) • The bigger the object, the slower it g ...
... typically expressed as that formula, where: Force = mass x acceleration (N) (kg) (m/s2) • There are several relationships implied in this law: • The harder the force, the faster it will move (F ∝ a) • The bigger the object, the harder you have to push (F ∝ m) • The bigger the object, the slower it g ...
motion - SCHOOLinSITES
... action exerted on a body in order to change body’s state of rest or motion. has magnitude and direction. net force • combination of all forces acting on an object. balanced forces: Objects either do not move or move at constant velocity. unbalanced force any change in an object’s state of mo ...
... action exerted on a body in order to change body’s state of rest or motion. has magnitude and direction. net force • combination of all forces acting on an object. balanced forces: Objects either do not move or move at constant velocity. unbalanced force any change in an object’s state of mo ...
1. SOLUTION: Because `B` is heavier and it sits on a steeper slope
... weight of balloon and passenger and sandbag, Wt : Fb = Wt = Mt g (≃ 1000 × 9.81 ≃ 981 N) (2 marks) ...
... weight of balloon and passenger and sandbag, Wt : Fb = Wt = Mt g (≃ 1000 × 9.81 ≃ 981 N) (2 marks) ...
Powerpoint - Buncombe County Schools
... F = ma basically means that the force of an object comes from its mass and its acceleration. Something very massive (high mass) that’s changing speed very slowly (low acceleration), like a glacier, can still have great force. Something very small (low mass) that’s changing speed very quickly (high a ...
... F = ma basically means that the force of an object comes from its mass and its acceleration. Something very massive (high mass) that’s changing speed very slowly (low acceleration), like a glacier, can still have great force. Something very small (low mass) that’s changing speed very quickly (high a ...
Chapter08b
... ♦ stay at rest, or ♦ maintain its motion at a constant velocity and in a straight line as long as ♦ no force is exerted on the object, or ♦ all forces cancel each other Says who? An observer at rest ...
... ♦ stay at rest, or ♦ maintain its motion at a constant velocity and in a straight line as long as ♦ no force is exerted on the object, or ♦ all forces cancel each other Says who? An observer at rest ...
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.