A 3.0 kg sled slides downward with an initial velocity of 5m/s and a height h=80 cm on an inclined plane making an angle of 30˚with horizontal. using energy methods: What is the speed of the sled at a height of 40cm if the coefficient of friction between the surfaces is 0.2

Q: The diagram shows a crate with mass m = 38.2 kg being pushed up an incline that makes an angle φ =…

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Q: A crane lifts a 650 kg beam vertically upward 9.6 m and then swings it westward 18 m. How much work…

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Q: A skier moving at 5.00m/s encounters a long, rough horizontal patch of snow having a coefficient of…

A: Given data: The initial velocity of skier is, v=5.00 m/s. The coefficient of kinetic friction is,…

Q: .An advertisement claims that a certain 1300 kg car can accelerate from rest to a speed of 25 m/s in…

A: Please see the answer below

Q: our students of average mass 80 kg each are raised by the elevator in the ESB building, with the…

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Q: A body of mass 2 kg is initially at rest on a horizontal frictionless plane. It is then pulled 4 m…

A: Given value--- mass = 2 kg. distance = 4 m. Force = 25 N. We have to find--- final speed?

Q: A crane lifts a 650 kg beam vertically upward 10.8 m and then swings it westward 18 m. How much work…

A: The formula for workdone is W=Fxcosθ

Q: Assume g= 9.8 m/s² near the surface of the Earth. Traveling in a mountainous area, a bus of mass 3…

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Q: An object of mass m = 4.1 kg is released from rest at the top of a frictionless ramp of height h =…

A: Given  Mass of object, m = 4.1 kg  Object start from rest from ramp top Height of ramp,h = 0.75 m…

Q: From what height would an automobile have to fall to gain the kinetic energy equivalent to what it…

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Q: An object of mass m = 3 kg is released from rest at the top of a frictionless inclined plane at…

A: Given:-  The mass of the block m = 3 kg, it is on a point A initially in the rest.  The work done on…

Q: Using the principle of conservation of mechanical energy, calculate the maximum height achieved by a…

A: Weight of ball = 5 N Velocity of ball = 12 m/s Maximum height =?

Q: A crate of mass 20.0 kg is pushed up a rough incline, which makes an angle of 25° with the…

A: Given data: -  The mass of the crate is m = 20.0 kg. The angle of the rough incline is θ = 25o. The…

Q: A 240-kg roller coaster reaches the top of the steepest hill with a speed of 5.60 km/h. It then…

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Q: An object with mass ? = 2 ?? is released from rest at a height ℎ = 6 ? from the top of an inclined…

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Q: A block of mass 0.31 kg is released from rest at point A and slides down a curved slope to point B.…

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Q: A skier moving at 5.00 m/s encounters a long, rough horizontal patch of snow having a coefficient of…

A: Given: The initial velocity is 5.00 m/s. The coefficient of kinetic friction is 0.220.

Q: A 60 kg snowboarder (including equipment) heads down a ski hill starting at a height of 100 m, from…

A: Mass, m = 60Kgheight, h = 100minitial speed, u = 4.5m/sfinal speed , v = 90kmh = 90x518 ms =…

Q: A block of weight 3.6 N is launched up a 30 inclined plane of length 2.25 m by a spring with spring…

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Q: A 51.6 kg sled coasts down a hill, starting from rest. The hill is inclined at an angle of 17.4…

A: Recall W=FdcosθHere angle θ between normal force and displacement is 900 so cos90=0

Q: A spring, with a spring constant k = 30,000 N/m, is compressed from a length of 15.0 cm to 10.0 cm,…

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Q: Acrate is moved 2 meters along a horizontal floor at a constant speed by force of 50 N which makes…

A: Given data:  Force (F) = 50 N Distance (d) = 2 m Angle (θ) = 30° above the horizontal  Required:…

Q: A 4000-kg elevator starts from rest accelerates uniformly to a constant speed of 2.0 m/s and…

A: The potential energy of a body is given by PE = mgh, where m = the mass of the body g = acceleration…

Q: A crate of mass 20.0 kg is pushed up a rough incline, which makes an angle of 25° with the…

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Q: Using energy considerations (and not kinematics), find the speed a drag-free object would have to be…

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Q: A 98 kg bicyclist traveling 15 m/s coasts up a 5 m high incline. After reaching the top of the…

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Q: A 54 kg person starts from rest, skis down a slope of height 50.00m, rises again to a slope of…

A: The mechanical energy at point A is given by MEA=KA+UA=0+mgh=54 kg9.81 m/s250 m=26487 J The…

Q: ne figure shows a cord attached to a cart that can slide along a frictionless horizontal rail…

A: Write the given values of the problem- Height of the cord(h) h=1.5 m sides of cord- x1=5.0 mx2=2.0…

Q: ,2 54. A 5.0-kg box has an acceleration of 2.0 m/s when it is pulled by a horizontal force across a…

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Q: You drag your 30 kg suitcase 1200 m thru the Chicago airport at essentially constant velocity 2.0…

A: Given: Mass, M = 30kg Distance , s= 1200m Velocity, v = 2.0m/s Force, F = 90N, 20o westward

Q: An advertisement claims that a 1000 kg car can accelerate from rest to a speed of 20 m/s in a time…

A: mass = 1000kg v1= 0m/s;    v2=20m/s t= 5sec. K.E1= 0  (car starts from rest) K.E2= (1/2)* 1000*…

Q: A 5.0 N projectile leaves the ground with a kinetic energy of 220 J. At the highest point in its…

A: The difference between the kinetic energies is,

Q: A 2.00 kg block is released from rest on a ramp that is inclined at an angle of 60.0∘∘ below the…

A: mass of block = 2 kg θ = 60o below the horizontal Initial height (h) = 2 m initial velocity on the…

Q: A 65.70 kg baseball player begins his slide into second base when moving at a speed of 6.090 m/s.…

A: Mass of the player, m = 65.7 kg Initial speed, u = 6.09 m/s Final speed, v = 0 m/s   From the…

Q: Q.3. A 50.00-kg skier is at the top of a 100-m high slope. (a) Using conservation of energy…

A: Given Data: The mass of the skier is, m = 50 kg. The height of the slope is, h = 100 m. (a) From,…

Q: A 98 kg bicyclist traveling 15 m/s coasts up a 5 m high incline. After reaching the top of the…

A: Given: Mass of bicyclist, m=98 kg Speed of bicyclist at bottom, u=15 m/s Speed of bicyclist at top…

Q: You reach out of a window 15 m above the ground and toss a ball straight up with a speed of 10 m/s.…

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Q: A crane lifts a 650 kg beam vertically upward 6.6 m and then swings it westward 18 m. How much work…

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Q: Spiderman, whose mass is 80.0 kg, is dangling on the free end of a 12.0-m-long rope, the other end…

A: Mas, m = 80 kg  Length of rope, l = 12 m

Q: An electric motor with an output of 15kW provides power for the elevator of a six storey building.…

A: The work done by the motor is, W=F×d                                       F=mg,d=displacement…

Q: A 55 kg motorcyclist is flying through the air at 72 km/h at the apex of the jump 8.3 m above the…

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Q: A valuable antique chest which weighs 1400 N is to be moved into a truck. To get the chest from the…

A: Given Data: The weight of antique is W = 1400 N The height is h = 1 m Ramp length is l = 4 m The…

Q: A crane lifts a 650 kg beam vertically upward 10.1 m and then swings it westward 18 m. How much work…

A: Here the workdone is only in upward direction. No workdone in horizontal direction.

Q: A worker pushed a 27 kg block 9.2 m along a level floor at constant speed with a force directed 32…

A:

Q: What minimum horsepower must a motor have to be able to drag a 450 kg box along a level floor at a…

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