# Recently Active Mechanics Questions

• two balls of masses A and B , M=9g and m=3g is attached by the the=reads to a point O such that (OA+OB) length is 1m The system is set into rotational motion in a horizontal plane about the vertical axis passing through O wit ...
replied2009-02-11 16:55:48
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replied2009-02-11 02:34:23
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replied2009-02-10 19:00:16
• the length of the day from today when the sun is directly overhead till tomorrow again when the sun is directly overhead can be determined by revolution of earth around the sun Please explain how is it correct ...
• Find angular frequency of motion of block of mass m if it is displaced slightly along horz.Neglect inertia effect of rod .Spring constants are k1 and k2.Neglect friction *Image* ...
replied2009-02-10 07:56:09
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replied2009-02-10 02:59:20
• a uniform rectangular block has a length twice as large as breadth It is lying on a horizontal plane which is gradually being raised so as to be inclined to the horizontal at an angle theta For what value of theta the block b ...
replied2009-02-10 02:15:14
• the driving side of a belt has a tension 1600N and the stock side has 400 N tension The belt turns a pulley 40 cm in radius at the rate of 300 r.p.m. to a dynamo The power delivered is Please give the solution ...
replied2009-02-10 02:14:38
• a satellite is revolving close to earth in a circular orbit with speed v=âˆšgR where R is radius of esrth .wat wil hapen if its speed is increased from v to âˆš1.5 v ...
replied2009-02-09 09:47:00
• a particle of mass m is projected with velocity v making an angle of 45Â° with the horizontal The magnitude of the angular momentum of the projectile about the point of projection when the particle is at the maximum height h ...
replied2009-02-09 00:21:27
• a uniform rod pivoted at its upper end hangs vertically It is displaced through an angle of 60Â° and then released Find the magnitude of force acting on a particle of mass dm at the tip of the rod when the rod makes an angle ...
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replied2009-02-08 07:52:59
• find the maximum velocity by which earth can rotate about sun in terms of G, mass of sun M, eccentricity of ellipse and semi major axis ...
replied2009-02-08 05:54:22
• *Image* for the arrangement shown in figure, the spring is initially compressed by 3 cm. when the spring is released, the block collides with the wall and rebounds to compress the spring again. if the time starts at the insta ...
replied2009-02-07 10:09:27
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replied2009-02-07 07:02:54
• the moon revolves round the earth 13 times in one year If the ratio of sun-earth distance to the earth-moon distance is 392 then the ratio of the masses of sun and earth will be Please solve it ...
replied2009-02-07 00:34:29
• A particle of mass m moves in the x-y plane, along a symmetric, frictionless, concave curve. The trajectory length along this curve is denoted by s. A uniform gravitational field acts in the negative y-direction. The particle ...
replied2009-02-06 22:12:52
• a car of mass m is moving on a horizontal circular path of radius r At an instant its speed is v and is increasing at the rate a Then prove that the coefficient of friction between the ground and car is not less than a/g ...
replied2009-02-06 17:25:59
• a cyclist cycles along the circumference of the circular horizontal plane of radius R The coefficient of friction depends upon the distance r from the center of the plane as u=uo(1-r/R) where uo=constant The centre of the cir ...
replied2009-02-06 00:49:40
• Q1. A uniform disc of radius r is spinned about its axis to an angular velocity Ï‰ and then carefully placed with its plane on a rough horizontal surface. Find the time taken for the disc to stop rotating, given the coefficie ...
replied2009-02-05 20:42:59
• Very conceptual..........plzzzz reply as soon as possible..... Q1 A source and observer both start moving simultaneously from origin,one along X axis and other along Y axis with speed of source equal to twice speed of observe ...
replied2009-02-05 20:05:55
• i was doing a qeustion in shm and i am stuck up here..........plz find moment of inertia about point P (pivot point) *Image* Semi circular wire. ...
replied2009-02-05 11:51:06
• Q1 2 blocks are arranged as in figure.The coeff of friction b/w blocks is Î¼s whereas no friction b/w floor and block.Calculate max possible amplitude for no slipping. *Image* I am getting A=Î¼sg(m+M)/k Q2 A disc of mass m is ...
replied2009-02-05 10:38:43
• *Image* cart slides without friction. find time period ...
replied2009-02-05 09:40:18
• *Image* a spring is cut into three equal pieces and connected as shown.... by wat factor will the time period of oscillation changes if a block is attached before and after ????? ...
replied2009-02-05 06:48:04
• a disc of mass M and radius R, lying in the vertical plane is free to rotate about a horizontal axis passing through its centre . a body of mass M is fixed at the highest point of the disc Now the system is released When the ...
replied2009-02-04 21:00:05
• the line of action of the resultant of two like parallel forces shifts by one-fourth of the distance between the forces when the two forces are interchanged The ratio of the two forces ...