Classical Mechanics Answers

If a magnet is attached to a string R long is pulled out to one side so the string is horizontal . When the magnet is let go , It swings downward and strikes an iron cube B of the same mass that is resting on a frictionless surface . The two sticks together and swing upward on the other side . What is the maxium value of theta , the angle between the string and the vertical ?

A small ball is suspended from a thread. It is lifted up with an acceleration 4.9 ms(sq) and lowered with an acceleration 4.9ms(sq) then the ratio of tensions in the thread in both cases will be :-

A particle can side on a smooth wire in the farm y=3x² where gravity acts in the direction of negative y axis use lagrange's equation to obtain the equation of motion
1) mx=6xλ
2) mx=6xλ, my+mg=1
3)mx=my+mg
4)my+mg=0

I need answers for these 25 questions


https://drive.google.com/open?id=1P5SZKoPqbJH62gag_PAiNsd-PxeIzM9n

A 12 kg box of supplies falls off a truck that has been parked. the box slides down an icy hill which has an incline of 10 degreees. There is a frictional force if 10n between the surfaces of the box and the hill. The G acceleration is -9.81m/s2.

1) find the weight and the perpendicular and the tangential components.
2) write an equation for the sum of the forces
i) perpenduclar
ii)tangental
3) what is the magnitude and direction of the net force of all forces acting on the box.
4) what is the acceleration
5) what is the frictional coefficient? is this static or kinetic

For the conservation of energy of a system,
Lagrangian and Hamiltonian do not
depend explicitly on
(A) momentum
(B) position
(C) Mass
(D) Time

The number of degrees of freedom of a rigid body in n- dimensional space is

A bullet weighing 0.0045kg is fired horizontally into 1.8kg wooden block at rest on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.2. The bullet comes to rest in the block which moves 1.8m. Find the speed of the bullet.

2 block of equal mass m 1 kg are attached to a spring . Block b colloides with block a with velocity v=2m/s find maximum compression in the spring.( K=200)

When I move I have kinetic energy
But my question is
When I move but holding a book in my hand
So does that book also have kinetic energy
If yes then is it half of mine KE which I possess