Mechanics | Relativity Answers

Calculate the size of stellar aberration effect in Newtonian physics for light comming straight down at speed c & telescope moving straight sideway at speed v ? Express theta in terms of v & c

In an experiment, the tiny droplets of the negatively electrified oil are dropping through a vac-
uum. Magnitude of the electric field is 5.92 × 104 N C−1
. Direction of the electric field is assumed to be
downward. (a) An experimenter observes a one particular droplet and that droplet remains suspended against
gravity. Assume the mass of the droplet to be 2.93 × 10−15 kg. What is the charge carried by the droplet? (b)
Now another droplet of same mass falls, in the vacuum, from rest to 15.3 cm in 0.275 s. What is the charge
on the droplet in this case?

Graham, a physics enthusiast, is asked by his instructor to visit a nearby carpentry. He observed
there a hand–held powered reciprocating saw, say a sabre saw, which performs SHM in a vertical plane with
an angular frequency of 350 rad s−1
. Assume that the tip of the toothed blade of the saw is at x = 0 with
positive velocity when t = 0 and the amplitude of SHM is 2.40 cm. Write an equation, as a function of time,
which shows the position of the tip of the toothed blade. Also calculate that how much will the blade take to
travel from x = 0 to x = 1.20 cm? To 2.40 cm?

If the total hanging massif 50g increased 4 times without changing the spring constant, how would this affect period of oscillation and/or the frequency?

how would the period of oscillation change if the value of gravity were tripled? how much affect would it have...if at all

A stone is thrown up from a platform with an initial velocity of 19.8 m/s. if
the top of the platform is taken to be the ground level, calculate, (a) the time
taken to reach the maximum height, (b) the maximum height reach by the
stone (c) its velocity just before reaching the ground and (d) total time taken
to reach back to the top of the platform.

A bus travels 225km in 5hrs. Find the average speed in m/s

ASSIGNMENT ONE
1. Show that the equation V2 – U2 = 2ax is dimensionally correct.
2. The period T of a simple pendulum is expressed by: √ where ‘l’ is
the length of the pendulum and ‘g’ is the acceleration due to gravity. Show
that the formula is dimensionally consistent.
3. The gravitational force of attraction F between two particles m1 and m2
separated by distance ‘r’ is given as ( ) If ‘K’ is a dimensional constant and its dimension is given as , find the values of x, y and z respectively.
4. A stone is thrown up from a platform with an initial velocity of 19.8 m/s. if the top of the platform is taken to be the ground level, calculate, (a) the time taken to reach the maximum height, (b) the maximum height reach by the stone (c) its velocity just before reaching the ground and (d) total time taken to reach back to the top of the platform.
5. Findthescalarproductof

A man travels 7.0km due North,then 10.0km East,find the resultant displacement.If he travels 7.0km 30degrees East of North,then 10.0km East,find the resultant displacement

A horizontal force of 12 newtons is applied to a 4.0 kg box that slides on a horizontal surface. The box starts from rest, moves a horizontal distance of 10 meters, and obtains a velocity of 5.0 m/s. The surface has friction. The friction force, assumed constant, is