A bicyclist has a combined mass (cycle and cyclist) of 60 kg and can produce 125 W of pedaling power. If her cross-sectional area is 0.32 m2 , drag coefficient is 0.83, and rolling resistance is 0.004, how fast can she pedal into a 6 m/s (about 15 mph) headwind on level ground? How about with a 6 m/s tailwind

Q: What is the maximum velocity at which a 25 W motor can lift an 8.5 kg object upward

A: Given that:- P=25 Wm=8.5 kgg=9.8 m/s2V=?   Since, P=mgV

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2200 kg load a height of…

A: Given, mass, m = 2200 kg             M = 10height, h = 30 m time, t = 12 s Force acting on the mass…

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2700 kg load a height of…

A: a) we will calculate the work done by the motor and then calculate the power from it The motor works…

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A: Radius of wind turbine,Speed,Density of air,To find that how much power is generated?

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2500 kg load a height of…

A: Given that Elevator motor lift of mass (m) =2500kg Load of Height (h) =30m Time (t) =12s It starts…

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2300 kg load a height of…

A: Given value--- load mass = 2300 kg. height = 45 m. time = 12 sec. initial speed = 0 m/s. final…

Q: If a water motor fills 25 kg of water in a pool of 60 m in 5 minutes, what is the power of the…

A: The pump fills a pool of height h=60 m with water of mass m=25 kg in t=5 min=300 s.The potential…

Q: (a) Find the useful power output (in w) of an elevator motor that lifts a 2300 kg load a height of…

A:

Q: If a 40 kg chest in the figure does not topple when a tensile force of 400 N is applied on a…

A: Mass m = 40kg Force F = 400N coefficient of kinetic friction is , μK = 0.2

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2200 kg load a height of…

A: Introduction: Power is defined as amount of energy transmitted in per unit time. Mathematically, P=…

Q: A 1500kg car accelerates from a uniformly stationary state at a speed of 10m / s in 3s. Find the…

A: The acceleration of the car can be determined as, Since the car accelerates from rest, so its…

Q: I am not sure as to go about solving this.

A:

Q: A vehicle is travelling at 20.0m/s steadily. If the engine provides 7.8x10 W consistently, what is…

A: Given, speed v = 20.0 m/s            power P = 7.8 × 104 W            resistive force Fr = ? In…

Q: By landing properly and on soft ground, humans have survived from airplanes when their parachute…

A: SOlution:

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Q: A speak takraw ball with mass 8.4 kg was thrown with an initial upward velocity component of 6.7 m/s…

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Q: A pump lifts 21.0 kg of water per minute through a height of 3.50 m. What minimum output rating…

A: Given :- m = 21.0 kg, h = 3.50 m, t = 1 min = 60s.

Q: Find the useful power output (in W) of an elevator motor that lifts a 2600 kg load a height of 30.0…

A:

Q: The strength of Earth's gravity at ground level = 9, point, 8, N, k, g, to the power minus 1…

A: Given data, Mass of the bridge span = 100 tons Mass of the bus = 30 tons Length of the bridge = 200…

Q: Find the useful power output (in W) of an elevator motor that lifts a 2300 kg load a height of 25.0…

A: Given: mass of load, m = 2300 kg mass of counterbalanced system, M = 10000 kg velocity, v = 4m/s…

Q: 13. A 4.50-kg child is swinging on a swing. If she is released from rest at a point 1.45 m above the…

A:

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2200 kg load a height of…

A:

Q: A girl and her skateboard have a combines mass of 85kg. She is initially at rest on the skateboard…

A: The mass of the girl and the skateboard, m=85 kg   The height of the hill, h=25.0 m

Q: With what minimum speed (in m/s)

A:

Q: Find the mass (in kg) of the black that a 40HP engine can pull along a level road at 15m/s if the…

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A: Write the work-energy equation. Here, m is the mass, vf is the final velocity, and vi is the…

Q: We would like to place 300 m long ski lift which moves with a towing speed of 12 km/h, on a steep…

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Q: Aodist in a race must climb a 5° hill at a constant speed of 8 m/s. The mass of the cycle and the…

A: Given data: The inclination of he hill is θ=5o. The constant speed of the cyclist is V=8 m/s. The…

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A:

Q: Find the useful power output (in W) of an elevator motor that lifts a 2300 kg load a height of 30.0…

A: We know that the formula of the power is given as  Power = EnergyTime  We know that the energy is…

Q: A 1.50 x 10°-kg car starts from rest and accelerates uniformly to 17.9 m/s in 11.3 s. Assume that…

A:

Q: 46.3-g golf ball is driven from the tee with an initial speed of 44.8 m/s and rises to a height of…

A: Given  Initial velocity u  = 44.8 m/s Mass m = 46.3 g = 46.3 ×10-3 kg  Maximum height H = 20.5 m

Q: A gardener pushes a 12 kg lawnmower whose handle is tilted up 37deg above horizontal. The…

A: We are given mass of lawn mover. We are given the angle of push wrt horizontal. We apply 2nd law of…

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2600 kg load a height of…

A: See below

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2600 kg load a height of…

A: Given: The load that lifts is 2600 kg. The height is 30.0 m. The time duration is 12.0 s. The final…

Q: E Consider an elevator car (lift) with a mass of 700kg which call carry up to 600kg of passengers.…

A:

Q: The rope of a swing is 3.40 m long. Calculate the angle from the vertical at which a 76.0 kg man…

A:

Q: Determine the power required by an 80kg man to run down a slope from 1.0 m/s to 2/0 m/s in 2…

A: given u = 1 m/s v= 2 m/s t = 2 sec