dynamics.js

dynamics = [
{
	qtext: "If an object weighs 30 N on Earth, how much would it weigh on the moon?",
	ans: 4.96,
	hint: "gEarth is 9.8m/s^2 and gMoon is 1.6m/s^2",
	ref: "http://www.solvephysics.com/dynamics_problem1.shtml"
},{
	qtext: "When a falling object is at a distance above the Earth's surface of 4 times the Earth's radius, what is its free-fall acceleration due to the Earth's gravitational force exerted on it? ",
	ans: 0.39,
	hint: "Use formula g=G*M/R^2",
	ref: "http://www.solvephysics.com/dynamics_problem33.shtml"
},{
	qtext: "A box is sliding up an incline that makes an angle of 20 degrees with respect to the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.2. The initial speed of the box at the bottom of the incline is 2 m/s. How far does the box travel along the incline before coming to rest? ",
	ans: 0.38,
	hint: "Take frictional force into account. Kindof block on a wedge problem",
	ref: "http://www.solvephysics.com/dynamics_problem11.shtml"
},{
	qtext: "A tension of 6000 Newtons is experienced by the elevator cable of an elevator moving upwards with an acceleration of 2 m/s^2. What is the mass of the elevator? ",
	ans: 508,
	hint: "T-mg=ma",
	ref: "http://www.solvephysics.com/dynamics_problem25.shtml"
},{
	qtext: "A block of mass 5 kg lies on a horizontal table. The block is at rest. The only forces acting on the block are the force due to gravity and the normal force from the table. What is the magnitude of the friction force?",
	ans: 0,
	hint: "This is a trick question 3:-) 3:-)",
	ref: "http://www.solvephysics.com/dynamics_problem20.shtml"	
},{
	qtext: "A 35 kg crate undergoes a horizontal acceleration of 1.5 m/s^2 on a level surface when pulled by a 65.0 N force. What is the coefficient of kinetic friction between the crate and the surface?",
	ans: 0.036,
	hint: "Draw force diagram on the block and equate opposing forces",
	ref: "http://www.solvephysics.com/dynamics_problem52.shtml"
},{
	qtext: "The force required to stretch Hooke's Law spring varies from 0 N to 65 N as we stretch the spring by moving one end 6.3 cm from its unstressed position. Find the force constant of the spring. Answer in units of N/m",
	ans: 1032,
	hint: "Spring force F=kx",
	ref: "http://www.solvephysics.com/dynamics_problem42.shtml"
},{
	qtext: "An object with mass of 630 g is hung on a spring. What is the force of the object acting on the spring?",
	ans: 6.17,
	hint: "For a better understanding draw free body diagram. Answer in Newtons",
	ref: "http://www.solvephysics.com/dynamics_problem50.shtml"
},{
	qtext: "A particle moves in a circle of radius 1 m. Its linear speed is given by v=4*t , where t is in second and v in meter/second. Find the radial acceleration at t = 2s. ",
	ans: 64,
	hint: "aCentripetal = v^2/r",
	ref: "http://www.solvephysics.com/dynamics_problem40.shtml"
},{
	qtext: "A bicycle is moving at 10 m/s.  What is the angular speed of its tires if their radius is 30 cm? ",
	ans: 33,
	hint: "Answer in rad/s. vTangential = vRadial * R",
	ref: "http://www.solvephysics.com/dynamics_problem23.shtml"
}]
module.exports=dynamics;