Physics: Mechanics of Solids

Question 1

stress

Accepted Answer

Finternal/A=Fapplied/A

Question 2

two block (mass m and M)conneced by a wire tensile stress is F is applied on M

Accepted Answer

T.S=Fm/(M+m)A

Question 3

when the mass m is hanging on lift and accelerating upwards with acceleration a tensile stress is

Accepted Answer

T.S=m(g+a)/A

Question 4

if 3 masses(m,2m,3m) are hanging from rigid end in that order from top to bottom then their tensile stress respectively are

Accepted Answer

T.S1=6mg/A , T.S2=5mg/A, T.S3 =3mg

Question 5

volume stress

Accepted Answer

volume Stress =F/A=pressure F=Normal force(thrust)

Question 6

shearing stress

Accepted Answer

F(tangential force)/A

Question 7

strain (longitudinal, volumetric,shearing)

Accepted Answer

longitudinal strain=∆L/L volumetric strain =∆V/V shearing strain =∆x/L

Question 8

hookes law

Accepted Answer

within elastic limit. stress proportional to strain

Question 9

breaking stress also

Accepted Answer

F1/A1=F2/A2

Question 10

breaking of wire under its own weight what is is Lmax

Accepted Answer

PA=mg ,PA=Vpg=ALmax.p.g Lmax=P/pg

Question 11

young modulus (Y) also equation with spring constant

Accepted Answer

longitudinal stress/longitudinal strain =FL/Ax comparing with force constant (K) k =YA/L

Question 12

elastic potential energy

Accepted Answer

1/2kx^2=F^2/2k=1/2(Fx)=1/2(YA/L)x^2

Question 13

potential energy per volume

Accepted Answer

(1/2)stress*strain ,(1/2)(stress^2/Y),(1/2)Y*strain^2

Question 14

stress on heavy rope( x is from bottom to that point) mass per unit length is M/L

Accepted Answer

stress=Mxg/LA, F=Mxg/L

Question 15

elongation due to its own weight

Accepted Answer

x=MgL/2AY

Question 16

elastic potential energy stored due to its in weight

Accepted Answer

U=M^2g^2L/6AY

Question 17

ratio of density immersed in a liquid xa is in air x is in liquid

Accepted Answer

p/sigma=xa-xb/xa

Question 18

ratio of extension (when m' andm" mass are being hanged from top to bottom) l=L1/L2 y=Y1/Y2 d=D1/D2

Accepted Answer

x1/x2=m'l/m"yd^2

Question 19

Bulk modulus

Accepted Answer

B=∆P/∆V/V (Bisothermal=P Badiabatic=gammaP

Question 20

density of compressed liquid

Accepted Answer

pf=pi(1+(∆P/B) bulk modulus is possessed by solids liquid and gases

Question 21

modulus of rigidity

Accepted Answer

eta=Fl/(A∆x) (phi=∆x/l)

Question 22

equivalent young modulus in series and parallel

Accepted Answer

series(keq=k1k2/k1+k2) series(yeq=2Y1Y2/Y1+Y2) parallel (keq=k1+k2) parallel(Yeq=Y1+Y2/2)

Question 23

poisson's ratio(sigma) also theoritical value and practical value

Accepted Answer

lateral strain/longitudinal strain ((-dr)/dl/l, theoretical value: -1<sigma<0.5 practical value : 0<sigma<0.5

Question 24

∆V/V = ?

Accepted Answer

∆r + ∆l/l ,-2sigma(∆l/l)+∆l/l , ∆l/l(1-2sigma)

Question 25

delta(depression of beam)

Accepted Answer

delta=Wl^3/(4bd^3*Y)

Question 26

maximum height of mountain

Accepted Answer

elastic limit of rock is 3*10^8 Nm^-2 p=3*10^3 kgm^-3 h=10km

Question 27

what is the relation b/w shearing modulus (G) and young modulus of most material

Accepted Answer

G=Y/3

Physics: Mechanics of Solids

Alle Karten

Mehr Karteikarten: Naturwissenschaften

Lerne diese Decks in der App