Recently Active Mechanics Questions

need some help in physics. i am starting this thread constraint equations. plz post the method of writing constraint equations for three- four cases of laws of motion and plz also advice how to write the constraint equations ...

Two tourists who are at a distance of 40 km from their camp must reach it together in the shortest possible time. They have one bicycle which they decide to use in turn. One of them started walking at a speed v_1=5\ \mathrm{k ...

in a soccer practice session the football is kept at centre of field 40yards from the 10ft high goal post.a goal is attempted by kicking at a speed of 64 ft/s at 45 degree to horizontal.will ball reach goal post. ...

with wat minimum speed shud a motorbike be moving on the road to safely cross a 11.7ft wide ditch with approach roads at an angle of 15 degree with the horizontal.assume length of bike is 5 ft and it leaves the road as soon a ...

find gravitational field at O... *Image* ...

can someone please explain to me hot to do this question An open u tube has some mercury in it. 27.2 cm water is filled in one of it ends. How high does the mercury rise in the other tube?? density of mercury is 13.6 g/cc and ...

1)a cylindrical vessel of radius 0.05 m with liquid in its inside is rotating along axis with speed of revolution 2rev /s. the liquid rises at the sides ,the find diff. in height of liquid at center and along sides 2)a syring ...

a hollow cone of height h and density p floats in water of density p' with its vertex inside water.The height of cone that lies in water ...

Q1 air streams horz. past an airplane of wing area 120 m^2 and weighs 300kg.The speed over top surface is 60m/s and that under bottom is 45m/s.What is net force Q2 A ball whose density is p (p<po where po is density of wat ...

a travelling wave y=2mm sin[100pie t-kx] of wavelength lambda=2cm is reflected & transmitted at boundary at x=0 den amplitude of SHM at x=-1 is ...

in d circuit shown in figure , switch S1&S2 open. find Va-Vb ...

i simply dont understand why now i am not able to solve this one............ i id it a few months back but now i cant get it........ plzzzzzzzz help me..its urgent............... a container of square base (2*2 m) height 4m i ...

*Image* a smooth ring P of mass m can slide on a fixed horizontal rod....a string tied to the ring passes over a fixed pulley and carries a block of mass m/2 as shown....at an instant the string between the ring and the pulle ...

A homogeneous rod AB of length L=1.8m and mass M is pivoted at the center o such that it can rotate freely in the vertical plane . The rod is initially in the horizontal position. A insect S of the same mass M falls verticall ...

*Image* a small particle of mass M/10 is moving horizontally at a height of 3R/2 from ground with velocity 10 m/s. a perfectly inelastic collission occurs at point P of sphere of mass m placed on smooth horizontal surface. th ...

a triangular lamina of area A n height H is immeresd in a liquid of density ρ in a vertical plane with its base on the surface of the liquid.the thrust on the lamina is?? ...

Q1 A heavy body of mass 10 kg is to be dragged along a horizontal plane(μ=1/√3).The least force required is a) 50/√3 N b) 100/√3 N c) 50 N d) 100 N ...

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*Image* a smooth hollow right circular cone has a vertical angle 2θ & is placed with its vertex downwards as shown it is rotated about its axis with a frequencyn a body dropped into it along d edge slides a little distance & ...

In which solid the velocity of sound is greater? ...

pls explain me in detail abt forward slipping and backward slipping. ...

a ball whose density is 0.4 * 103kg/m3 falls into water frm a height 9 cm.to wat depth i will sink??? 1.9 cm 2.6 cm 3.4.5cm 4.2.25cm ...

There is a thin uniform hemi- .. bowl of mass m and rad R is lying on a smooth smooth horizont surf..F is applied perpendicular to the rim...The inst angular accl of the bowl?? k=F/3mR a. 20k b. 10k c. 40 k d. 5 k ...

A rough cricular platform is fixed to a frictionless vertical axle.Its radius = 1m and M.I. = 200 kg-m2.A man of 50 kg stands on the edge of it.All are at rest initially.Then the man starts walking along the edge with a const ...

*Image* There is a water retaining wall with semi cylindrical gate(ABC) at its bottom of radius 'R' and length 'b'. If 'H' be the height of the structure and 'ρ' be the density of water.... Q1 :- The horizontal component of ...

*Image* a small partical of mass m n its restraining cord r spinning with an angular velocity ω on the horizontal surface of a smooth disc as shown..the force F is slightly relaxed , r increases n ω changes. 1.∂ω/∂r=-Ï ...

*Image* find the minimum forcesuch that df/dF=0(where f is the frictional force and F is the force) a)10 N b)50/3 N c)20 N d)50 N ...

*Image* in d fig shown ABCD is a fixed smooth conducting frame in horizontal plane . T is a bulb of power 100 W. P is a smooth pulley OQ is a conducting rod neglect the self inductince of the loop and resis of any part other ...

A block of mass 1kg is pushd against a rough vertical wall with a force 20N coefficient of static friction being 1/4;Another horizontal force of 10 N is applid on the block in a direction parallel to the wall.Will th block mo ...

In the given figure , a smooth parabolic wire lies in the vertical (x-y plane) .The shape of the given track is defined by the equation y=x2/a(a is a constant ) .A ring of mass of which can slide freely on the wire track,is p ...