Mechanics | Relativity Answers

Oil flows through a standard 25 mm diameter orifice under 5.5 m head at a

measured rate of 3 L/s. The jet strikes a wall 1.5 m away and 0.12 m

vertically below the centreline of the contracted section of the jet. Determine

all the coefficients of the orifice.

A box of mass 20 kilograms is kept on a smooth horizontal surface. Another object of mass 16 kg is kept on the box. The two objects are connected by light in extensible string and the string goes over smooth pulley . If a force of 6 newton is applied on the box , and the acceleration of the box.

An object of mass 4 kg is moved on a horizontal surface with a constant acceleration of 0.2m/s^2 , by a horizontal force of 6 Newtons. Find the friction force acting on the object and the coefficient of friction.

Motion of a particle is determined by the equation

d x dx x t

dt dt

2

2

-

-

 4 8 20cos2

The particle starts from rest at x = 0. Find x(t).

An engine of a car of mass 1200kg produces a force of 5000N calculate the acceleration of the car if the is 2000N of air resistance acting against the car

A rocket of mass 2000kg produce a thrust of 3000N during take off calculate the acceleration of the rocket. Given g=10

how to use the parallelogram method to add more than two vectors. 

how to use the parallelogram method to add more than two vectors. 

An aircraft flying at an unknown initial velocity accelerates uniformly,at the rate of 5m/s².it reaches a velocity of 200m/s after accelerating over a distance of 3000 m. calculate the initial velocity of the aircraft

4. Experiments show that the actual number of muons that reach the base of Mt. Washington is 400.

a. According to your muon clock graph, how much time has elapsed if 400 muons reach the base of Mt. Washington?

b. By what factor do the times you found differ?

c. Suggest an explanation for this difference.