35 ft 35 ft B -p-

Q: A spring is used to stop a 50-kg package which is moving down a 20° incline. The spring has a…

A:

Q: In a railroad classification yard, a 75-Mg freight car moving at 1.1 m/s at A encounters a retarder…

A:

Q: A toy car is propelled by water that squirts from an internal tank. The weight of the empty car is…

A: Given data

Q: A locomotive exerts a constant force 200,000 lbs on a set of series-connected railroad cars weighing…

A: Let us draw the FBD  Acceleration of the train…

Q: An 8-kg cylinder C rests on a 4-kg platform A supported by a cord that passes over the pulleys D and…

A: Given data as per the question mass of block A = 4 kg mass of block C = 8 kg mass of block B = 4 kg…

Q: Two wires AC and BC are tied at C to a sphere that revolves at a constant speed v in the horizontal…

A: Given Ball mass = 5 kg Maximum tension on the wire is 60 N To find Maximum velocity allowable for…

Q: In order to shorten the distance required for landing, a jet airplane is equipped with movable vanes…

A: Given data

Q: A 2000-kg automobile starts from rest at point A on a 6° incline and coasts through a distance of…

A:

Q: Car A was traveling west at a speed of 15 m/s and car B was traveling north at an unknown speed when…

A:

Q: A constant force P is applied to a piston and rod of total mass m to make them move in a cylinder…

A: Consider the FBD of the given piston rod, The equation of motion can be given as,

Q: As part of an outdoor display, a 5-kg model Cof the earth is attached to wires AC and BC and…

A: Given:TAC = 116N | m = 5kgr = 0.945 mFree body diagram   weight of the model, ωω = mg = 5 x 9.81 =…

Q: Determine the altitude reached by the spacecraft of Prob. 14.95 when all the fuel of its launching…

A: Total mass is written as, The rate of fuel consumption is given as, The time is taken by rocket to…

Q: Two hemispheres are held together by a cord which maintains a spring under compression (the spring…

A: Given data: Mass of hemisphere A, mA = 2.5 kg Mass of hemisphere B, mB = 1.5 kg Initial velocity V0…

Q: In order to determine the weight of a freight train of 40 identical boxcars, an engineer attaches a…

A:

Q: A pilot of mass m flies a jet in a half-vertical loop of radius R so that the speed of the jet, v ,…

A: Given: The mass of the jet is mass m. The radius of the loop is R. The constant speed of the jet is…

Q: Slider C has a mass of 0.5 kg and may move in a slot cut in arm AB, which rotates at constant speed…

A:

Q: A spring is used to stop 50kg block moving down a 20 degrees inclined plane. The spring has a…

A:

Q: Coal is being discharged from a first conveyor belt at the rate of 120 kg/s. It is received at A by…

A: Given data: The rate of coal discharge, dmdt=120 kg/s The velocity of discharge at A and B is v1 = 3…

Q: A railroad car with length L and mass m0 when empty is moving freely on a horizontal track while…

A: Consider the diagram shown below for the railroad showing the initial and final conditions.

Q: A 40-Mg boxcar A is moving in a railroad switchyard with a velocity of 9 km/h toward cars B and C ,…

A: Given data as per the question weight of boxcar A =40 Mg The velocity of A = 9 km/h Mass of car B =…

Q: A spring is used to stop 50kg block moving down a 20 degrees inclined plane. The spring has a…

A:

Q: A rocket weighs 2600 lb, including 2200 lb of fuel, which is consumed at the rate of 25 lb/s and…

A: Given, Weight of Rocket WR = 2600 lb Weight of Fuel WF = 2200 lb Rate of fuel combustion dW/dt = 25…

Q: A spacecraft of mass m describes a circular orbit of radius ị around the earth. (a) Show that the…

A: (a) The gravitational force, Force on spacecraft from the second law, From equation (1) and…

Q: It takes 15s to raise a 1200-kg car and the supporting 300-kg hydraulic car-lift platform to a…

A: To find (a) The average mechanical power required P. (b) The average electrical power required P'.…

Q: A 1500-kg automobile starts from rest at point A on a 6 incline and coasts through a distance of 150…

A: Answer: (a) The speed of the automobile at point B is 17.54 m/s. (b) The coefficient of static…

Q: A locomotive exerts a constant force of 200,000 lbs on a set of series-connected railroad cars…

A:

Q: A 10-lb collar is attached to a spring and slides without friction along a fixed rod in a vertical…

A: Mass of the collar; m = W/g  m = 10/32.2 = 0.31056 lb s2/ft Potential energy of the spring for…

Q: A piston of mass m and cross-sectional area A is in equilibrium under the pressure p at the center…

A: Given: Mass of the piston is 'm', cross sectional area is 'A', pressure of the cylinder is 'P'.…

Q: A light train made of two cars travels at 72 km/h. The mass of car A is 18 Mg and the mass of car…

A: The initial velocity of the train,  Vi=72Km/hr (Multiply by 5/18 to change in km/hr to m/s) Vi=20…

Q: An athlete pulls handle A to the left with a constant force of P= 100 N. Knowing that after the…

A: Given Data P=100N xA= 0.30m VA = 3m/s

Q: The sphere at A is given a downward velocity vo of magnitude 5 m/s and swings in a vertical plane at…

A:

Q: The system shown is at rest when a constant 250-N force is applied to block A . Neglecting the…

A: (a) Draw the free-body diagrams of block A and block B,   From the above diagrams, aA=3aB…

Q: A 10-kg package drops from a chute into a 25-kg cart with a velocity of 3 m/s. Knowing that the cart…

A: (a) To find: The velocity of the cart. Given: The mass of packages is mp=10 kg. The mass of cart is…

Q: 2000-kg automobile starts from rest at point A on a 6° incline and coasts through a distance of 50 m…

A:

Q: A stream of water flowing at a rate of 1.2 m3/min and moving with a speed of 30 m/s at both A and B…

A: Given data Q=1.2 m3/minV=30 m/sm=20 kg

Q: An airline pilot climbs to a new flight level along the path shown. Knowing that the speed of the…

A: Given: The speed at point A is v=180 m/s. The speed at point C is v’=160 m/s. The weight of the…

Q: A 4-lb collar which can slide on a frictionless vertical rod is acted upon by a force P which varies…

A: The free-body impulse-momentum diagram of the collar is given as

Q: A 54-kg pilot flies a jet trainer in a half vertical loop of 1200-m radius so that the speed of the…

A:

Q: The last segment of the triple jump track-and-field event is the jump, in which the athlete makes a…

A:

Q: Solve Prob. 13.68 assuming the kinetic coefficient of friction between the package and the incline…

A: m=Mass of package=50 kgθ=Inclined angle=20°k=Spring constant=30 kN/mxi=Initial compression of spring…

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.