Test 1 - Bemidji State University
... a. 100-watt bulb that burns for twenty minutest b. 75-watt bulb that burns for thirty minutes c. 60-watt bulb that burns for one hour d. 40-watt bulb that burns for two hours e. 25-watt bulb left on for ten hours 2. The watt number on a light bulb tells the amount of energy the light bulb is using i ...
... a. 100-watt bulb that burns for twenty minutest b. 75-watt bulb that burns for thirty minutes c. 60-watt bulb that burns for one hour d. 40-watt bulb that burns for two hours e. 25-watt bulb left on for ten hours 2. The watt number on a light bulb tells the amount of energy the light bulb is using i ...
Physphax Review
... Increasing increases wll and decreases wperp but does not change w itself. In equilibrium, wperp = FN and wll = Ff or any other force(s) holding object up the incline. If no friction, Fnet = wll, and object accelerates down incline at a rate: a = gsin. ...
... Increasing increases wll and decreases wperp but does not change w itself. In equilibrium, wperp = FN and wll = Ff or any other force(s) holding object up the incline. If no friction, Fnet = wll, and object accelerates down incline at a rate: a = gsin. ...
Part II
... work done by that force on an object moving from one point to another depends ONLY on the initial & final positions of the object, & is independent of the particular path taken. Example: gravity. ...
... work done by that force on an object moving from one point to another depends ONLY on the initial & final positions of the object, & is independent of the particular path taken. Example: gravity. ...
June - Life Learning Cloud
... A non-uniform rod AB, of mass 5 kg and length 4 m, rests with one end A on rough horizontal ground. The centre of mass of the rod is d metres from A. The rod is held in limiting equilibrium at an angle θ to the horizontal by a force P, which acts in a direction perpendicular to the rod at B, as show ...
... A non-uniform rod AB, of mass 5 kg and length 4 m, rests with one end A on rough horizontal ground. The centre of mass of the rod is d metres from A. The rod is held in limiting equilibrium at an angle θ to the horizontal by a force P, which acts in a direction perpendicular to the rod at B, as show ...
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Unit 3 Test [23291]
... Using Figure 14-4, if the downward force was applied by you for a distance of 2 m, how much work would you have done? ...
... Using Figure 14-4, if the downward force was applied by you for a distance of 2 m, how much work would you have done? ...
Lecture1_Inertia
... An object subject to a constant net external force will D. move with increasing speed. If any unbalanced force can start an object moving…then a continuously applied force can only make it move faster and faster. People are confused when friction is high enough that an object slows to rest shortly a ...
... An object subject to a constant net external force will D. move with increasing speed. If any unbalanced force can start an object moving…then a continuously applied force can only make it move faster and faster. People are confused when friction is high enough that an object slows to rest shortly a ...
Unit Two Chapter 3, Part 2 Projectile Motion
... constant horizontal velocity (neglecting air resistance) ...
... constant horizontal velocity (neglecting air resistance) ...
Jumping Jumping Energy and Work Work Energy Kinetic Energy
... An object lifted against gravity still experiences the downward force of gravity when it is held up, but at rest. When no longer held up, it will obviously fall. Energy will appear as KE as it falls, but what’s happening while the object is held motionless in the air? ...
... An object lifted against gravity still experiences the downward force of gravity when it is held up, but at rest. When no longer held up, it will obviously fall. Energy will appear as KE as it falls, but what’s happening while the object is held motionless in the air? ...
Chapter 8
... Moment of Inertia • Remember back to Newton’s 1st Law of Motion, Objects tend to stay in motion, or at rest, unless acted upon by a net force. • Notice it says Motion, but does not specify whether the motion is linear or rotational. • We also said that Newton’s 1st Law describes the term inertia, o ...
... Moment of Inertia • Remember back to Newton’s 1st Law of Motion, Objects tend to stay in motion, or at rest, unless acted upon by a net force. • Notice it says Motion, but does not specify whether the motion is linear or rotational. • We also said that Newton’s 1st Law describes the term inertia, o ...
Energy
... -For an isolated system, the mechanical energy of the system is conserved. U1 + K1 = U2 + K2. -From this we can see that: ∆Emec= 0 = ∆K + ∆U W= ∆Emec. This is work done on a system by an external force. (friction involved) W= ∆Emec + ∆Eth; ∆Eth= f*d (frictional force; sliding) ...
... -For an isolated system, the mechanical energy of the system is conserved. U1 + K1 = U2 + K2. -From this we can see that: ∆Emec= 0 = ∆K + ∆U W= ∆Emec. This is work done on a system by an external force. (friction involved) W= ∆Emec + ∆Eth; ∆Eth= f*d (frictional force; sliding) ...
Circular motion
... centripetal acceleration is determined from the free-body diagram (tension, gravity, friction, normal force, etc). Since F=ma and ac=v2/r, the magnitude of the centripetal force equals mv2/r or, written together, Fc=mv2/r. The direction of the centripetal force is the same as the centripetal acc ...
... centripetal acceleration is determined from the free-body diagram (tension, gravity, friction, normal force, etc). Since F=ma and ac=v2/r, the magnitude of the centripetal force equals mv2/r or, written together, Fc=mv2/r. The direction of the centripetal force is the same as the centripetal acc ...
Chapter 2 - Forces In Motion
... This is also known as the Law of Inertia It says : An object in motion will remain in motion at a constant speed and in the same direction unless acted on by an unbalanced force. An object at rest will remain at rest unless acted upon by an unbalanced force. ...
... This is also known as the Law of Inertia It says : An object in motion will remain in motion at a constant speed and in the same direction unless acted on by an unbalanced force. An object at rest will remain at rest unless acted upon by an unbalanced force. ...
PHY 101 Lecture 4 - Force
... /1/ If the net force acting on an object is 0, then the object moves with constant velocity. /2/ If the net force is F, then the object undergoes acceleration; a = F /m where m is the mass. /3/ For every action there is an equal but opposite reaction. Now, what do these statements mean? ...
... /1/ If the net force acting on an object is 0, then the object moves with constant velocity. /2/ If the net force is F, then the object undergoes acceleration; a = F /m where m is the mass. /3/ For every action there is an equal but opposite reaction. Now, what do these statements mean? ...
Hunting oscillation
Hunting oscillation is a self-oscillation, usually unwanted, about an equilibrium. The expression came into use in the 19th century and describes how a system ""hunts"" for equilibrium. The expression is used to describe phenomena in such diverse fields as electronics, aviation, biology, and railway engineering.