P (lb) 10 4 lb 3 t (s)

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

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Q: A 625-g basketball and a 58.5-g tennis ball are dropped from a height of d = 1.5 m onto the floor.…

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

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Q: A test machine that kicks soccer balls has a 5-lb simulated foot attached to the end of a 6-ft long…

A: Write the expression of the law of conservation of energy.

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

A: Given data as per question Length of spring =14 in  k = 4 lb/in Calculations mass of…

Q: 4. A train of mass 500 t is drawn by a locomotive of mass 50 t, which exerts a tractive effort of 75…

A: Newton's equation of motion can be written as, v=u+ats=ut+12at2v2=u2+2as Here, v is the final…

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: A 600-g ball A is moving with a velocity of magnitude 6 m/s when it is hit as shown by a 1-kg ball B…

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Q: A 75-g ball is projected from a height of 1.6 m with a horizontal velocity of 2 m/s and bounces from…

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Q: Problem 4. The last segment of the triple jump track-and-field event is the jump, in which the…

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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: A 400-kg satellite has been placed in a circular orbit 1500 km above the surface of the earth. The…

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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: After having been pushed by an airline employee, an empty 40-kg luggage carrier A hits with a…

A: (a) Consider the kinematic diagram shown below for the given carrier before and after impact between…

Q: A 600-g ball A is moving with a velocity of 6 m/s when it is hit as shown by a 1-kg ball B which has…

A: Given Data, mA = Mass of the ball A = 600 g = 0.6 Kg VA = Velocity of the ball A = 6 m/s mB = Mass…

Q: A 400-kg satellite was placed in a circular orbit 1500 km above the surface of the earth . At this…

A: Given     Mass, m = 400 kg   Velocity, v = 25.6 x 103 km/h                    = 7.11 x 103 m/s Find…

Q: Collars A and B, of the same mass m, are moving toward each other with identical speeds as shown in…

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Q: A car is traveling at 100 km/h along a straight, level road when its brakes

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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: A 1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical…

A: Given data  Mass of the collar that slides on the circular ring m = 1lb Spring constant of the…

Q: The system shown is at rest when a constant 150-N force is applied to collar B. Neglecting the…

A: Let us assume F to be the cable tension and velocity of collar B as VB This problem can be analysed…

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 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: The rocket engines of a spacecraft are fired to increase its velocity by 450 ft/s. Knowing that 1200…

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Q: A 1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical…

A: Given Weight of collar = 1 lb Unreformed length of spring = 5 in Spring constant = 22 lb/ft To find…

Q: Two identical spheres A and B each of mass m , are attached to an inextensible inelastic cord of…

A: The free body impulse-momentum diagram of the spheres in shown below. +=                (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: 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: Solve Prob. 13.26, assuming that the 2-kg block is attached to the spring.Reference to Problem…

A: GIvenMass of upper block,m1=3 KgMass of lower block,m2=2 KgSpring constant,K=40NmNow,Weight of…

Q: A spacecraft is placed into a polar orbit about the planet Mars at an altitude of 380 km. Knowing…

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

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Q: Q3) A girl throws a ball at an inclined wall from a height of 1.2 m, hitting the wall at A with a…

A:

Q: A 5-kg collar A is at rest on top of, but not attached to, a spring with stiffness k1 = 400 N/m when…

A: Use the method of work and energy applied to the collar A. Now as the collar is initially at rest…

Q: An elevator cage of mine shaft weighing 10 kN when empty is lifted or lowered by means of a wire…

A: Given data; Weight of empty lift WL=10 kN Distance covered by the lift s=187.5 m Weight of the man…

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

A: Given:Mass of the car, mc=1200 kgMass of the lift, mL=300 kgLift Height, s=2.8 mTime taken, t=15 sec

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.