Physic-2

# Physic-2 - n magnitude of normal force kinetic or static...

This preview shows pages 1–5. Sign up to view the full content.

Newton’s first law of motion: An object at rest remains at rest, and an object in motion continues in motion with constant velocity (that is, constant speed in a straight line), unless it experiences a net external force. No external force or acceleration: X=d=* t V is constant velocity. with down ward motion 1mile= 1.609km= 1609m=5280ft = initial velocity, = velocity at time t after = constant acceleration, = initial distance, = distance at time t = 0 unless specified. ; ; 1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
, :Centripetal acceleration, r = radius, 2
Newton’s Second Law 1 N =0.225 lb The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Force ( N )= = kg ( ) m: Mass (kg), a: Acceleration , g: Gravitational acceleration (9.8) w eight of the object (N)= = kg ( ) μ : coefficient of kinetic/ static friction,

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: n: magnitude of normal force kinetic or static Force (N)= = kg ( ) 3 Neton’s third law of motion: If two objects interact, the fore exerted on object 1 by object 2 is equal in magnitude but opposite in direction to the force exerted on object 2 by object 1. W: Work or Energy F: Force along the direction of displacement, s : displacement (distance) Work= dyne-centimeter(dyne.cm)(erg)=foot-pound(ft*lb) W=Fs=(ma)s= (Fcos θ )s = kg ( )*m= Newton-meter=(N*m) =joule(J) Gravitational Potential Energy Hook’s Law: k = spring constant, x = compression in the spring ^ newtons Potential spring energy ^ joules Kinetic energy Conservation of mechanical energy: Linear Gravitational Spring: +mgy Non-conservative energy: 4 Power is the time rate of energy transfer. 5...
View Full Document

{[ snackBarMessage ]}

### Page1 / 5

Physic-2 - n magnitude of normal force kinetic or static...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online