3.0 m FIGURE P10.74

Q: Starting from rest, a 99-kg firefighter slides down a fire pole. The average frictional force…

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Q: An object of mass m=2kg starts from rest and moves down along an incline as shown in the figure…

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Q: NUME O A 70 kg man runs up a long flight of stairs in 4 s. The vertical height of the stair is 4.5m.…

A: 1. Given :  m = 70 kg t = 4 s h = 4.5 m

Q: A small block of mass m=.5kg is fire with an initial speed of v0 = 4m/s alog a horizontal section of…

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Q: A 60.0 kg skier with an initial speed of 15 m/s coasts up a 2.50 m high rise as shown in the figure.…

A: Given data- Mass of skier =60 kg Initial speed vi=15 m/s Height h=2.50 m Coefficient of kinetic…

Q: d of mass m starts from rest and slides without friction from a height h along a curved waterslide…

A: Motion of projectile can be divided into x component and y component

Q: A 65.0 kg skier with an initial speed of 12.0 m/s coasts up a 2.50 m high rise as shown in Figure…

A: Given data: Initial speed of skier, u=12.0 m/s Mass of the skier, m=65.0 kg Height of the coast,…

Q: The Top Thrill Dragster at Cedar Point amusement park in Sandusky, Ohio, is one of the world’s most…

A: Given that the value of mass of the train and speed of the train and time and also given the height…

Q: What power on the cables does it require to lift a 250-kg elevator cab and 4 passengers each with a…

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Q: An Olympic swimmer stands on top of a platform at a height H above a swimming pool. At the moment of…

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Q: The Top Thrill Dragster at Cedar Point amusement park in Sandusky, Ohio, is one of the world’s most…

A: mass of train (m) = 10.5 ton initial speed (u) = 0 msFinal speed (v) = 120 mph = 120×1609.4 m3600 s=…

Q: A 6260-kg satellite is in a circular earth orbit that has a radius of 3.17 x 10' m. A net external…

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Q: 3.70-kg particie is subject to a net force that varies with position as snown in the figure. The…

A: GivenMass of particle, m=3.70 kg

Q: A 67.97-kg skier with an initial speed of vi=36.26 m/s coasts up a H=14.84-m-high rise as shown in…

A: Given :Mass of skier m = 67.97 kgInitial speed u = 36.26 m/sCoefficient of friction μ=0.147

Q: A 60.0 kg skier with an initial speed of 11.0 m/s coasts up a 2.50 m high rise as shown in Figure…

A: The below figure represents the distance travelled up the plane by a 60kg skier with an initai speed…

Q: A 50-kg skier with an initial speed of 13 m/s coasts up a 2.5-m-high rise as shown in the figure.…

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Q: A block of mass 0.50 kg is pushed against a horizontal spring of negligible mass until the spring is…

A: Given information: The mass of the block (m) = 0.50 kg The compression in the spring (x) = 0.35 m…

Q: If the skier coasts up the hill, what is his speed (in m/s) when he reaches the top plateau? Assume…

A: Energy can neither be created nor destroyed. It is simply converted from one form to another and the…

Q: The Top Thrill Dragster at Cedar Point amusement park in Sandusky, Ohio, is one of the world’s most…

A: The given values are written below with appropriate variables. Here, m denotes the mass, u denotes…

Q: A child sits on a freshly oiled, straight stair rail that is effectively frictionless and slides…

A: Mass = m = 25 kg Angle = θ = 400 Distance slides = d = 4 m Since rail makes an angle of 400 above…

Q: If you throw a ball with mass m upward to height h, the gravity does work? Choose the answer a)…

A: suppose we throw a ball upward to a height h then gravitational force will act on it in the vertical…

Q: What minimum speed does a 100 g puck need to make it to the top of a frictionless ramp that is 3.0 m…

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Q: A 0.7-kg object moves in a horizontal circular track with a radius of 3.7m. An external force of 1.2…

A: r=Radius=3.7 mm=Mass of object=0.7 kgF=Force=1.2 N

Q: A 5kg block was released from rest on top of a quarter circular surface. If the vertical height from…

A: Given data:  Initial velocity = 0 m/s Mass (m) = 5 kg Vertical height (h) = 4 m Acceleration due to…

Q: A 445 N boy swings on a 3.0 m long swing. If his horizontal speed at the lowest point is 3.0 m/s,…

A: Given  Weight of boy W=445N length of rope l=3m Speed at lowest point v=3m/s

Q: How much gravitational potential energy (relative to the ground on which it is built) is stored in…

A: Given: Mp = Mass of the pyramid =9×109 kghcom = height of the Center of Mass of the pyramid= 42 mEp=…

Q: A 2100 kg car starts from rest at the top of a driveway that is sloped at an angle of 20° with the…

A: Given data: Mass of the car, m=2100 kg Angle, θ=20° Energy lost, ΔE=20×103 J Speed of the car at the…

Q: How long will it take a 7.08 hp motor to lift a 250 kg beam directly upward at constant velocity…

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Q: A particle of 0.5kg of mass is moving with a constant speed in a circular path of radius (r= 2m)…

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Q: Along a straight horizontal track, a roller-coaster car is moving at 25 m/s. As shown in the figure…

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Q: BOX 1.25m 34° Assuming no friction and the box starts at rest, what will be the speed of the box at…

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Q: A 50 kg box slides down a 6-meter high plane angled 30o to the horizontal. If the coefficient of…

A: We have a box of mass m=50 kg which is sliding down a height of h=6 m plane angled at 30o and the…

Q: A recently patented pile driver pounds piles into the ground by launching 15 kg bowling balls from a…

A: According to Law of conservation of energy total energy is conserved . KE+PE=Es where KE is kinetic…

Q: A skier weighing 0.85 kN goes over a frictionless circular hill as shown. If the skier's speed at…

A: By energy conservation, Sum of kinetic and potential energy is constant. (In the absence of…

Q: A roller-coaster car shown in the figure below is pulled up to point 1 where it is released from…

A: Part A:Use the conservation of mechanical energy to solve the following part.Since the Sum of the…

Q: Starting from rest, a 30.6 kg child rides a 8.50 kg sled down a frictionless ski slope. At the…

A: The given data are: M=30.6+8.5 kg=39.1 kgv=6.4 m/sθ=15.1° Here, M denotes the combined mass, v…

Q: A roller-coaster car with mass 840 kg is launched from a huge spring with k = 31 kN/m into a…

A: Use conservation of energy to find the magnitude of the velocity at the top of the loop as shown…

Q: Starting from rest, a 92-kg firefighter slides down a fire pole. The average frictional force…

A: A 92 kg firefighter slides down a fire pole.and avarage friction force exerted on him by the pole…

Q: A film of Jesse Owens's famous long jump (Fig. 6–47) in the 1936 Olympics shows that his center of…

A: Given data: Speed at the top of the arc, v=6.5 m/s Height risen by centre of mass, h=1.1 m Let…

Q: How long does it take for a forklift with a useful power output of 980 watts, to raise a 100-kg…

A: Given data: Power (P) = 980 watts Mass (m) = 100 kg Height (h) = 2.0 m Required:  Time (t)

Q: A 60.0 kg skier with an initial speed of 13 m/s coasts up a 2.50 m high rise as shown in the figure.…

A: Write an expression using Newton’s second law of motion along the incline

Q: A 97.49-kg skier with an initial speed of vi=34.93 m/s coasts up a H=11.75-m-high risel.  The slope…

A: Given,Mass of the skier, m = 97.49 kginitial speed, vi = 34.93 m/sheight, H = 11.75 mslope of the…

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.