Classical Mechanics Answers

Consider the following arbitrary fields. Find out which of them can possibly represent electrostatic or magnetostatic field in free space: (a) A =ycos ara, + (y + e X)e: (b) B = 20 #, (c) C = r2 sin 0 a0'

What is force?

A basketball player practices shooting three-pointers from a distance of 7.50 m from the hoop, releasing the ball at a height of 2.00 m above the floor. A standard basketball hoop’s rim top is 3.05 m above the floor. Th e player shoots the ball at an angle of 48.0° with the horizontal. At what initial speed must she shoot to make the basket?

1. Explain the working of a full-wave bridge rectifier with a neat circuit diagram and waveform.

1. Explain the construction and working of Strain gauge

1. Explain the construction and working of LVDT

If for a system there are n degrees of freedom, then the phase space of that system has the dimension

I want to share a theorem in physics. It is from my thoughts. I called it (Omar's theorem in the centrifugal force)

Omar's theorem in the centrifugal force:

If an object is subjected to centrifugal force inside a car or bus, the object will stick outward to the window and will not be able to return or apply inertia if the moving object (bus or car) does not return to its normal motion in a straight line (one dimension).

Please tell me what do you think? Is it good? How can I share it?

As shown in the figure, a very small block of mass m is pushed against a spring of spring constant

k. After some finite compression of length l, the block is released and it leaves the spring and

slides through a horizontal surface. The kinetic friction force between this block and the horizontal

surface is μk = bx, where b is a positive constant. It then slides along a frictionless circular loop

of radius R. Gravitational force is acting vertically downward and the magnitude of gravitational

acceleration is g. When the block reaches at the top of the loop, the force of the loop on the block

(the normal force) is equal to twice the gravitational force on the mass.

(a) Find the work done on the block by the kinetic friction force while it travels from x = 0

to x = d along the horizontal surface.

(b) Find the tangential velocity of the block at the top point of the circular loop.

(c) Find an expression of l in terms of some or all of the following: g, d, b, k, R and m

On the horizontal table, there are ten identical little cubes in a row.

The cubes are not bonded together in any way. Squeeze the entire chain with the two outermost cubes in your palms. Which force F should you use to squeeze the cubes off the table and split them apart? Each cube has a mass of m, and the coefficient of friction between cubes is.