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Subject: Physics, asked on 19/2/18

Solve this :

Q.22.  The fundamental frequency of a closed organ pipe is equal to the first overtone of an open organ pipe. If the length of the open organ pipe is 60 cm, what is the length of the closed organ pipe. 

Subject: Physics, asked on 19/2/18

Solve this:
Q.(ii) A force F = -kx2 acts on a particle in x direction. Find the work done by the force in displacing the particle from x = - a to x = 2a.
 

Subject: Physics, asked on 16/2/18

Please solve this

Subject: Physics, asked on 15/2/18

2 books of 1 Kg each are placed on a table. The coefficient of static friction between the books and the book and the table is µ. Find the minimum force F applied to the lower book so that there occurs slip between both the books.

Subject: Physics, asked on 13/2/18

Prove that frictional force is a non consercative force with diagram

Subject: Physics, asked on 12/2/18

 In the above figure, all surfaces are assumed to be frictionless and pulley is assumed to be ideal. The block 'A' is projected towards the pulley 'P' with an initial velocity u0u0. Which of the following is/are incorrect?






 

Subject: Physics, asked on 11/2/18

Q. ​​​In the system shown in the figure, the wedge is moving towards left with speed 2 m/s. Then, the velocity of the block B will be:



A 33 msB 1 msC 2 msD 0 ms

Subject: Physics, asked on 7/2/18

express centripetal force in terms of frequency

Subject: Physics, asked on 5/2/18

Two blocks of mass m = 2 kg and M = 5 kg are in contact, a horizontal force F=35 N is applied to m, the force of contact between the block is ?

Subject: Physics, asked on 5/2/18

​A block of mass 8 kg is pushed up on an inclined plane having an inclination of 30° with a force of 80 N. If the block moves with a constant speed over the inclined plane then determine the coefficient of friction between the block and the inclined plane. 
plz answer FAST 

Subject: Physics, asked on 4/2/18

how is it possible for a car to move with speed more than optimum speed on banked track
 

Subject: Physics, asked on 22/1/18

Plz fast

Q. A disc of  mass m = 50 g slides with the zero initial velocity down an inclined plane set at an angle α =30° to the horizontal; having traversed the distance l = 50 cm along the horizontal plane, the disc stops. Find the work performed by the friction forces over the whole distance, assuming the friction coefficient k = 0.15 for both inclined and horizontal planes.
 

Subject: Physics, asked on 22/1/18

Plz fast ans is ( work= ma^4t^2/8)

Q119. A locomotive of mass m starts moving so that its velocity varies according to the law v = as is a is a constant, and s is the distance covered. Find the total work performed by all the forces which are acting on the locomotive during the first t seconds after the beginning of motion.
 

Subject: Physics, asked on 17/1/18

6. The potential energy for a system of bodies is given by  U = -a32r. Find 
the force field that is sustaining the system. What kind of a force field is 
this? 

7. A solid cylinder of mass M and radius R is released from rest from top A 
of an inclined plane of height h and inclination θ. The cylinder rolls 
without slipping. Find (a) the speed at which it reaches bottom B of the 
plane. (b) The time it takes to reach the bottom of the plane. 

8. A body is dropped from rest from a height h=5.0 m. After rebounding 
twice from a horizontal floor, to what height will it rise if the coefficient 
of restitution is 0.8. 

9. Derive the condition for a body undergoing a sharp turn of radius of 
curvature r with a velocity v so that it does not skid away from its path, 
What can be done to improve the situation so that the body never skids 
away. 

Subject: Physics, asked on 12/1/18

a material body A of mass m1 exerts a force on another material body B of mass m2 . if the acceleration of B be a2 , the magnitude of the acceleration of A IS

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