Physics_files/Unit 5 Review Part 1
... 12. During the collision, what will be the direction of the net force on block B? a) b) c) no net force will be exerted on block B 13. During the collision, what will be the direction of the net force on block A? a) b) c) no net force will be exerted on block A 14. During the collision, the force ex ...
... 12. During the collision, what will be the direction of the net force on block B? a) b) c) no net force will be exerted on block B 13. During the collision, what will be the direction of the net force on block A? a) b) c) no net force will be exerted on block A 14. During the collision, the force ex ...
Stress II
... Like traction, a force is a vector quantity and can be manipulated following the same mathematical principals ...
... Like traction, a force is a vector quantity and can be manipulated following the same mathematical principals ...
Rotational dynamics
... A turntable of mass 5kg and radius 25 cm is rotating at 10 radsˉ¹. A metal ring of mass 2 kg and radius 10 cm is dropped over the centre of the turntable. a) Find the new angular velocity of the system. b) Using rotational energy determine whether this is an elastic or an ...
... A turntable of mass 5kg and radius 25 cm is rotating at 10 radsˉ¹. A metal ring of mass 2 kg and radius 10 cm is dropped over the centre of the turntable. a) Find the new angular velocity of the system. b) Using rotational energy determine whether this is an elastic or an ...
Electricity, Magnetism and Applications
... direction at each point in space. You could imagine the space around a positive charge as a “porcupine” of little arrows pointing outward, as shown in figure to the ...
... direction at each point in space. You could imagine the space around a positive charge as a “porcupine” of little arrows pointing outward, as shown in figure to the ...
MECH 221 FLUID MECHANIC
... So, F = PatmA + g sin yc.g.A Or, F = PatmA + ghc.g.A = (Patm + ghc.g)A If Pc.g=Patm + ghc.g , then the pressure acting at c.g. is: F = P c.g. A In a fluid of uniform density, the force on a submerge plane surface is equal to the pressure at the c.g. of the plane multiplied by the area of the pl ...
... So, F = PatmA + g sin yc.g.A Or, F = PatmA + ghc.g.A = (Patm + ghc.g)A If Pc.g=Patm + ghc.g , then the pressure acting at c.g. is: F = P c.g. A In a fluid of uniform density, the force on a submerge plane surface is equal to the pressure at the c.g. of the plane multiplied by the area of the pl ...
Weightlessness
Weightlessness, or an absence of 'weight', is an absence of stress and strain resulting from externally applied mechanical contact-forces, typically normal forces from floors, seats, beds, scales, and the like. Counterintuitively, a uniform gravitational field does not by itself cause stress or strain, and a body in free fall in such an environment experiences no g-force acceleration and feels weightless. This is also termed ""zero-g"" where the term is more correctly understood as meaning ""zero g-force.""When bodies are acted upon by non-gravitational forces, as in a centrifuge, a rotating space station, or within a space ship with rockets firing, a sensation of weight is produced, as the contact forces from the moving structure act to overcome the body's inertia. In such cases, a sensation of weight, in the sense of a state of stress can occur, even if the gravitational field was zero. In such cases, g-forces are felt, and bodies are not weightless.When the gravitational field is non-uniform, a body in free fall suffers tidal effects and is not stress-free. Near a black hole, such tidal effects can be very strong. In the case of the Earth, the effects are minor, especially on objects of relatively small dimension (such as the human body or a spacecraft) and the overall sensation of weightlessness in these cases is preserved. This condition is known as microgravity and it prevails in orbiting spacecraft.