Mechanics | Relativity Answers

One end of a transmission wire which exerts a horizontal tension of 850 lbs is fastened to a pole where a guy wire is also fastened. What is the angle which the guy wire can make with the pole if it exerts a tension of 1,400 lbs?

Four forces act at a point. The first, 500 grams acts due south, the second, 50 grams acts due west, the third, 400 grams acts due north, and the fourth, 100 grams acts due east. What is the magnitude and direction of the resultant?

2.Derive moment of inertia of a solid sphere

Consider an O2 rotating in x,y plane about the z-axis the rotation passess through the centre of molecule perpendicular to its length the mass of each O2 is 2.26 X10 ​-26Kg and at room temperature the average separation between the 2 atom
a.find the moment of inertia of the molecule about the z-axis
b.if the angular Speed of the molecule about the z-axis is 4.6piX10^12 rad/s.what is its rotational kinetic energy

The center of mass of a person may be determined by an arrangement -lady laying on flat board. A light plank rests on two scales separated by a distance of d =1.80 m and reading Fg1=500n and Fg2=270n. Determine the distance of the girls center of mass from her feet.

the average day on Jupiter in 10 hours. If the average angular acceleration is -5 x 10(to the negative 10 power) radians per second squared, how many earth days does it take for jupiter to stop rotating?

A boat is travelling at 15 miles per hour. A man walks across the deck in a direction at right angles to the direction of the boat at the rate of 6 ft per second. What is the total distance traveled by the man in 1 second with respect to the earth?

How far below an initial straight-line path will a projectile fall in five seconds?

A motorcycle of mass 100 kg travels around a flat circular track of radius 10 m with a constant speed of 30 mi./s. What force is required to keep the motorcycle moving in a circular path at the speed?

What will be the volume of 1kg water?