Recently Active Mechanics Questions

a ball falls frm 20 m height on floor n rebounds to 5m time of contact is .02sec find acc during iimpact ...

When a bubble rises what happens to the Potential energy ?? I thought abt it in 2 ways & got 2 logical answers but only 1 is right..pls help ...

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HCV(FRICTION) EXERCISE QUES NO.29 ...

post the solution of HCV(friction) q-31 of exercise ...

An astronaut inside a small space ship orbiting around earth cannot detect gravity.,,but if the space station orbiting around earth has large size he can... WHY??? ...

In the arrangement shown, m= 2kg and M = 8kg. Assuming pulleys to be smooth and light, and the contact surfaces to be frictionless, find the initial acceleration of the wedge. ...

why isn't potential energy corresponding to a non-conservative force defined ...

A:we can shield a body from gravitational influence of nearby matter by putting it inside a hollow sphere or some other means. R:We can shield a charge from electrical forces by putting it inside hollow conductor this is not ...

In nonstretchable strings mechanical waves are always transverse , that too when the the string is under tension .Explain why?? I am sorry if i have posted this question in "mechanics" !! i don't know where to post the waves ...

HCV(CIRCULAR MOTION) WORKED OUT EXAMPLE-12 HOW TO RESOLVE TENSION ALONG RADIUS OC.? ...

which of the following symptoms are likely to affect an astronaut in space?? a)swollen face b)swollen feet c)headache d)orientational problem ...

A BODY OF MASS 2 KG IS LYING ON A ROUGH INCLINED PLANE OF INCLINATION 30 DEGREES.FIND MAGNITUDE OF FORCE PARALLEL TO INCLINE NEEDED TO MOVE BLOCK DOWN THE INCLINE.COEFFICIENT OF STATIC FRICTION=0.2 ...

Find the forces on the block blocks (including friction) The friction between the lower and upper block is N and lower and ground is n *Image* ...

a parachutist after bailing out falls 50m without friction wen parachute opens it decelerates at 2m/s2 he reaches d ground with a speed of 3m/s at what height did he bail out? d equation of d straight line wich bisects d inte ...

Two bubbles (same liquid) of radius r and R (R>r) are connected by tube of negligible volume. The tube has a valve. When the valve is opened, what will happen to the sizes of the bubbles. (qualitative and not quantitative ...

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 ...

An infinite plane inclined at an angle θ to the horizontal . A point mass m is placed on the plane at very large height . the mass is given a push with 'v' velocity in the horizontal direction along the plane . i.e. the dire ...

1) A body of mass m = 3.513 kg is moving along the x-axis with a speed of 5.00 ms-1. The magnitude of its momentum is recorded as 1 ) 17.565 kg ms-1 2 ) 17.56 kg ms-1 3 ) 17.57 kg ms-1 4 ) 17.6 kg ms-1 ...

HCV- newton's laws of motion chapter exercise q no.16 and 23. i m not able to draw diagrams which r necessary for these problems. so plz manage from HCV ...

sorry to change ques. how to use constraint method in hcverma newton's laws ex-9. the prob there is to decide the direction of displacement of big block. using energy we get constraint as 2a1+a2+a3=0 but i know correct eq. is ...

A car travelling at 60km/h overtakes another car travelling at 42km/h.assuming each car to be 5m long find the total road distance used for overtake nishant sir,plz give the solution. ...

Q2. A child throws a ball from point A with an initial velocity 20 m s-1 at an angle 37° with the horizontal. B is a point on its trajectory such that tangent at B makes 30° with horizontal. The radius of curvature at B is ...

nishant bhaiya plz post the correct solution of HCVERMA(kinematics) exercise question no.-44 ...

In work energy theorem we say that the net work done on the body = net change in the kinetic energy of the body..... why, here, do we involve the kinetic energy only... and why is it not potential energy or mechanical energy? ...

*Image* SOLVE DIS ONE............PLS ...

What is constraint equation..?? First a few examples of constraint equation a) If there is a stone tied to a rope that you are whirling around your head.. there is a constraint equation. b) If there is a body kept on the floo ...

A uniform rod of mass=2kg and length l=1m rests upon a smooth horizontal surface.One of the ends of the rod is struck with impulse=2Ns in horizontal direction perpendicular to the rod.As a result the rod obtains a momentum=2N ...

1) A particle of mass 10^-2 kg is moving along the positive X - axis under the influence of a force F(x) = -k/2(x^2) where k =10^-2 Nm^2 . At time t=0,it is at x = 1.0 m and its velocity is v=0 a)find its velocity when it rea ...

Sir whenever i did tension related problems there was always a wire-mass system n the mass is attached to 1 end of the wire..but in this prob its kind of different..i cant find the tension.. Q. When a bird of weight W sits on ...