Recently Active Mechanics Questions

A solid sphere of mass m rolls down a inclined plane of height h . find the rotational kinetic energy of sphere ??? plzz m weak at this topixc so plzzz post full solution?? ...

A:Water is filled up in hollow cylinderical container of conducting bases and adiabatic curved surface and kept vertical in an isolated system.If temp of cylinder is decreased slowly from the bottom.The ince formation will st ...

A SOLID BODY STARTS ROTATING ABOUT A STATIONARY AXIS WITH AN ANGULAR ACC. 2*10-2T HERE,T ISD IN SECONDS.HOW SOON AFTER BEGINNING OF ROTATION WILL TOTAL ACC. VECTOR MAKE AN ANGLE OF 60° WITH VELOCIRTYT VECTOR? PLZ SOLVE COMPL ...

*Image* Q3. A man is running on horizontal road with speed 2km/hr, he finds that rain is falling at θ = tan-1(1/2) with vertical. If he starts running in opposite direction with speed 4km/hr, then the rain will appear to fal ...

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1) angular speed of a planet is smallest at farthest point form sun in elliptical orbit 2) angular velocity is characterisitc of rigid body at a whole 3) Two binary starts having mass Ma and Mb and radius Ra and Rb moving in ...

*Image* what type of wave is "the wave" shown in above figure? ...

1) 4 point masses A,B,C,D are placed at coplanar but non collinear points,If P is centre of mass of A,B,C,D ..identify correct statements a)P must lie within quad ABCD b)P must lie on a line joining any of two points A,B,C,D ...

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Q1. *Image* θ = 45° (Q1) Q2. *Image* ...

A table with smooth horizontal surface is turning at an angular speed w abt its axis a groove is made on the surface along a radius and a particle is gently placed inside the groove at a distance a from the centre Find the sp ...

1.what will be the graph of varition of the magnitude of radial accerleration with time for a particle projected at t=0 with speed vo at an angle \Theta above the horizontal??? 2.what will be tha graph of vation of the magnit ...

Q1. Two blocks of mass m and 2m respectively are placed on smooth horizontal ground connected by a spring of spring const. K. Initially the spring is unstretched. (natural length L) m is on the left and 2m is on the right m i ...

Two identical blocks are released from the top of two fixed wedges of same height(h) and same base length (l). The speeds of the blocks when they reach the ground are related by( k is the coefficient of friction in both) (A) ...

1.Plaskett's binary system consists of two stars that revolve in a circular orbit about a centre of gravity midway between them.This means that the masses of the two stars are equal if the orbital speed of each star is V and ...

An organ produces a G note with an intensity of 10-6 W/m2. What is the sound level of this G note? a. 6 dB b. 18 dB c. 60 dB d. 120 dB ans (c) ...

*Image* A small bucket of mass M is attached to a long inextensible cord of length :L as shown in fig. The bucket is released from its lowest position, the bucket scoops up mass m and swing to a height h. The height h is A. L ...

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pulley's radius is 20cm and M.I is 0.2kgm2 .the string is attached to a block. spring constant is 50 N/m .mass of block=1kg.The system is released from rest with spring at its natural length .Find speed of the block when it h ...

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A body executes simple harmonic motion under the action of a force F1 with a time period 4/5s. If the force is changed to F2 it executes S.H.M with time period 3/5 s. If both the forces F1 and F2 act simultaneously in the sam ...

A uniform heavy rod of weight W, cross sectional area A, and length L, is hanging from a fixed support . young's modulus of the rod is Y . Find the elongation of the core. .... .... 1)What will be the answer 2)wont we conside ...

PLEASE EXPLAIN TO ME THE STEPS THAT I'M SHOWING HERE : *Image* This is a popular Irodov problem. (FLUID IS FILLED UPTO THE BRIM ). I am putting down a few lines of what i can't understand here ..... if you have good will....p ...

*Image* a. 6 kg b. 4 kg c. 8 kg d. 10 kg ans is c ...

Q1 A open tank having non viscous liquid to height 5m is palced over gorund.A heavy spherical ball falls from height 40m over the ground in tank.Find height to which ball will go back.Collison b/w ball and bottom of tank is e ...

1)A:Negative work is done on water vapor in air molecules that ocndense on outside of glass of cold water R:Temperature of condensing molecules is getting decreased due to condensation 2)A:A flywheel is a disc shaped body of ...

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a rectangular container of height 3m,width 3m each is filled with ideal liquid upto 3/2m.Container is pulled horz with acc a=g.The gauge pressure at point A as shown in fig is P1. if container is completely filled with liq an ...

A rat is at a position R and a snake is at S in the field as shown below. The moment the rat starts running uniformly in a direction making an angle of 20 degree with the line RS, the snake moves to catch its prey. If the sna ...

What is the angle made by the displacement vector of the point of a wheel (of radius R) initially in contact with the ground, with the x-axis, when the wheel rolls forward 3/4th of a revolution? ans is tan inverse 7/33.... i ...