Leftover Mechanics Flashcards
What is the accelaration of a frictionless pulley?
a=(m2-m1)g/(m1+m2)
What is the tention of a frictionless pulley?
t= 2m1m2g/(m1+m2)
Acceleration of a hung pulley by the sides of a wall?
a= m2g/(m1+m2)
Tention of a hung pulley by the sides of a wall?
T= 2m1m2g/(m1+m2)
What is the formula of static friction and kinetic friction?
f(s)=μ(s)R
f(k)=μ(k)R
Effect of earth’s rotation on apparent weight at the equator?
Write the answer on the copy
Formula of total linear momentum after elastic 2 dimensional collision?
m1v1+m2v2=m1v1’+m2v2’
Linear Momentum remains conserved
Similarly for kinetic energy as well
Formula of elastic collision between a heavy and a light body
Using law of conservation of linear momentum,
v1’=v1
v2’=2v1-v2
;given m1»m2
What happens when perfectly inelastic collision between two bodies
They stick to each other
m1v1+m2v2=m1V+m2V
What is the formulaic representation of coefficiant of restitution?
Velocity of seperation= e(Velocity of Approach) where 0
What is the relation between linear and angular accelaration?
Linear accelaration a= r x angular accelaration α
What is the formulaic representation of radius of gyration?
Moment of Inertia I= MK²
Radius of gyration K= √I/M
What is the formula of relation between torque and angular acceleration?
τ=Iα, τ=dL/dt
What is the formulaic representation of theorem of parallel axis ?
I=I(cm)+ Md²
