When its 75-kW (100-hp) engine is generating full power, a small single-engine airplane with mass 700 kg gains altitude at a rate of 2.5 m/s (150 m/min, or 500 ft/min). What fraction of the engine power is being used to make the airplane climb? (The remainder is used to overcome the effects of air resistance and of inefficiencies in the propeller and engine

Q: A champion athlete can produce one horsepower (746 W) for a short period of time. If a 70-kg athlete…

A: To go to the top of a 254 m highmountain, the athlete needs to gaina potential energy = mgh⇒P>E =…

Q: Brick load. A load of bricks with mass m = 363 kg is to be lifted by a winch to a stationary…

A:

Q: When its 80 kW engine is generating full power, a small single-engine airplane with mass 750 kg…

A: Given data:  Full power of engine (Pfull) = 80 kW Mass (m) = 750 kg Speed (v) = 2.5 m/s Required:…

Q: A skier of mass 65 kg is pulled up a slope by a motor-driven cable. (a) How much work is required…

A: Given:-  mass of the skier m= 65 kg  height h= 85 m  slop is θ=30° The speed of the skier is v= 2.2…

Q: A skier of mass 64 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Given:Mass of the skier, m = 64 kgSlope = 30 degreesConstant velocity of the skier upto the slope, v…

Q: The engine of a Honda Civic has a power of 1.32 x 105 W (176.88 hp).   a) How much work does this…

A: Power is defined as the energy transferred per unit time. Since this energy is consumed in work…

Q: A 684-kg elevator starts from rest and moves upward for 4.20 s with constant acceleration until it…

A: Given: The mass of the elevator is m=684 kg, The cruising speed is vf=1.79 m/s. The time is t=4.20…

Q: Wé are creating comething called

A: Given: Mass of cat m=5kg Power P=196 watt.

Q: A 710 kg car drives at a constant speed of 23 m/s.  It is subject to a drag force of 434 N.  What…

A: SOlution: Given that m = 710 kg v =  23 m/s Fdrag = 434 N slope of 2.0°

Q: Suppose a 925-kg car climbs a 2.05° slope at a constant speed of 30.5 m/s.   Calculate the power…

A: Since, the car climbs the slope with a constant velocity, the expression for the power required is,

Q: An electric motor is rated to have a maximum power output of 0.67 hp. If this motor is being used to…

A:

Q: A leaky bucket, which weighs 5 N empty and initially has 40 N worth of water in it, is lifted into…

A: Given

Q: You push on a box of 10kg with a force F = (20i −10j )N. It moves on a rough surface (uc = 0.1) over…

A:

Q: A 28 kg air compressor is dragged up a rough incline from r1=1.9i+2.2j m to r2=9i+1.4j m, where the…

A: The expression for the work done by the gravity is W=mgh       h-displacement along y axis=28 kg-9.8…

Q: A car with the mass m=1600kg coasts down an incline from an initial height of h=7m with an initial…

A: W=12mv2f-mgh-12mv2i

Q: If a person weighs 87.3 kg, then how much work must they do to climb up a 5.4 m high ladder that…

A: Given data:  Mass (m) = 87.3 kg Height (h) = 5.4 m Required: The work done (W)