Mechanics | Relativity Answers

A simple pendulum made 50 oscillations in 22.3s.find its period

a uniform rod of wood floats vertically in water with 14cm of its length immersed in water.If its is depressed slightly and released find its period of oscillation.

the equation of a simple harmonic oscillator may be written as $$a={-}\omega^{2}×$$ (the symbol have their usual meaning).in experiment to determine the period of oscillation of a loaded spiral spring T,which of the following is the correct relationship between T and $$\omega$$

In an experiment to determine the period of oscillation of a loaded spiral spring,the equation of a simple harmonic oscillator $$a={-}(k/m)×$$,where the symbols have their usual meaning,was used.write down the equation for the angular frequency $\omega$ in terms of k and m,the effective mass of the system

a block is placed on piston which is moving vertically with a simple moyionmos period 1second.At what amplitude of the motion will the block and piston just get separated?if the piston has an amplitude of 5cm upto what frequensy will the block remain continuosly in contact with piston?

Many children are lined up at an ice cream stand. If the child at the back pushes the child in front of him, and she in turn pushes the child in front of her, and so on, will they create a transverse or longitudinal wave in the line?

the exhaust gas of a rocket is expelled at the rate of 1300kg/s, at the velocity of 50000m/s. find the thrust on the rocket in newtron

a 10-g bullet of unknown speed is shot horizontally into a 2-kg block of wood suspended from the ceiling by a cord the bullet hits the block and becomes lodged in it.After the collision,the block and the bullet swing to aheight 30cm above the original position.What was the speed of the bullet? (this device is called the ballistic pendulum)take g=9.8ms

Given two vectors a=4i^-3j^+2k^, b=i^+2j^-k^ calculate a.b

A car accelerates from rest to a speed of 10 m/s in a time of 8 s what is the acceleleretion and how far will it go in this time ?