Mechanics | Relativity Answers

A harmonic oscillator has a mass of 0•20kg,an unknown spring constant, if the period is T=20. Find k

Matt is watching a jet take off when he hears the engine roar with an intensity of 100 W/m^2. At what minimum distance should Matt be, in order for him to not hear the jet?

An inclined plane is 100 m long and at an angle of 20 degrees * 10 * k * epsilon horizontal. The A*Lambda of the slope is two. Calculate: a) the effort required to push a 7200 N block up the slope b) the ideal mechanical advantage

c) the efficiency of the slope.

An inclined plane is 100 m long and at an angle of 20 degrees to the

horizontal. The AMA of the slope is two. Calculate:

a) the effort required to push a 72 underline C N block up the slope b) the ideal mechanical advantage c) the efficiency of the slope.

A watervpump lifts water from a level 10 m below the ground. Water is pumped at a rate of 30kg/minute with negligible velocity and friction. Calculate the minimum horsepower the engine should have for this? Use g=9.8 m/s^2

Determine the curl of F which is (∇ × F ) at the point (2, 0, 3) given that

F = ze2xy i + 2xz cosy j+ (x + 2y)k

We have a horizontal spring with a mass attached oscillating with a maximum displacement of A on either side. At which intermediate displacement(s) the kinetic energy would equal the potential energy

Find the unit tangent vector, the unit normal vector, the curvature and the radius of curvature of the circle x= a cos theta, y= a sin theta, z=0 at point with parameter theta.

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.