Mechanics | Relativity Answers

calculate the horizontal component of the initial velocity of the shot when the shot is a metal ball of mass 4.0 kg and the angle of projection for a particular throw is 40 degree

In a nuclear plant, the final mass of the products is 6.32×10^-27kg, while the initial mass of the reactant is 6.30×10^-27kg, the energy released in the process is (speed of light in vacuum 3.0×10^8m/s, 1eV = 1.6×10^-19J)

In frame S, a particle passes through the origin at time t=0 with a constant velocity U=5m/s making an angle €=tan-1(3/4) with x-axis. Find the position of the particle at time t=2s.Assume another frame S’ which is moving relative to S with velocity V=1m/s x. Find the speed of the particle and its location at time t=2s in frame S’

A thin rectangular plate ( length=b and breath =a)is hanging with the help of two identical massless springs as shown .just after one of the spring is cut, angular acceleration of the plate is

[img]https://upload.cc/i1/2020/03/13/uVG8F5.jpg[/img]


d8 is 4

[img]https://upload.cc/i1/2020/03/13/uVG8F5.jpg[/img]



we need to slove question(b)

d8 is 4

[img]https://upload.cc/i1/2020/03/13/uVG8F5.jpg[/img]

Define scalar

1. A block of stone of mass 30 kg (S.G. 3) hangs from a cord and is completely immersed in water. Find the tension in the cord.

Suppose we have a small ball, conected by a weightless rigid bar to a rotating point, around which it can easily rotate because of gravity. We hold it vertically and give it a little shake, so that it begins the motion. What is the angle which the bar will form with the initial direction when the vertical component of its speed is maximal?