Mechanics | Relativity Answers

A particle execute SHM between x =-A and x=+A. The time taken for it to go from 0 to A/2 is T1 and to go from A/2 to A is T2, then find relation between t1 and t2

A popular magic trick consists of placing a coin on a card and the card on the top of a glass. The edge of the card is flipped briskly with the forefinger, causing the card to fly off the top of the glass as the coin drops into the glass. Explain. What law does this illustrate?

body of mass 200 g executing simple
harmonic motion has a velocity of 3 cms^-1
when its displacement is 4 cm and a velocity
of 4 cms^-1when the displacement is 3 cm.
Calculate
(i) amplitude of oscillation, and
(ii) period of oscillation.

Simple harmonic motion is given by
x = 3 sin 4πt + 4 cos 4πt where x is in metre
and t in second. Calculate
(i) amplitude of oscillator,
(ii) frequency of oscillation and
(iii) displacement at time t =0

The minimum distance required to stop a car traveling at 35 mi/hr is 40 ft. Assuming the same acceleration, what is the minimum distance required to stop a car traveling at 75 mi/hr?

A ball is thrown obliquely upward with the initial speed 12m / s and with the elevation angle 42 degrees. what speed does the ball have after 0.18s?

A stone is thrown obliquely upwards with the throw angle 30degree relative to the horizontal plane. the highest point of the path after 0.15s. At what speed was the stone thrown

(1) A stone is thrown obliquely upwards with the output speed 25m / s from a point 1.5m above ground level. The throwing height of the bow is 26.0m above the ground. how big is the stone's speed when it passes the highest point? we ignore the air resistance.

A popular magic trick consists of placing a coin on a card and the card on the top of a glass. The edge of the card is flipped briskly with the forefinger, causing the card to fly off the top of the glass as the coins drop into the glass. Explain. What law does this illustrate

A liquid of density 2p is filled in a cylindrical vessel whose cross sectional area is 2A. A wooden cylinder of height H cross section area A and density p is floating in the liquid at equilibrium with its axis vertical. The cylinder is pushed down by a small distance x from its equilibrium position and released. Find its initial acceleration