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Q: A 20.0 kg rock is sliding on a rough, horizontal surface at 8.00 m/s and eventually stops due to…
A: Given that,Mass (M) = 20 (Kg)Initial velocity (u) =8 (m/sec)Final velocity (v) = 0…
Q: A tower crane has a hoist motor rated at 153 hp. If the crane is limited to using 75.0 % of its…
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Q: A 4.23 kg bundle starts up a 22.4° incline with 103 J of kinetic energy. How far will it slide up…
A: The expression from work energy theorem,
Q: An electric motor is rated to have a maximum power output of 0.83 hp. If this motor is being used to…
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Q: A 4.10-kN piano is lifted by three workers at a constant speed to an apartment 22.0 m above the…
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Q: A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from…
A: The work done during the uniform acceleration phase can be calculated using the work-energy theorem,…
Q: The electric motor of a model train accelerates the train from rest to 0.720 m/s in 25.0 ms. The…
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Q: A 4.00–kg block is set into motion up an inclined plane with an initial speed of vi = 8.20 m/s (see…
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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: Two blocks of mass 5.00kg and 3.00kg are connected via a pulley, as shown in the picture. The system…
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Q: The electric motor of a model train accelerates the train from rest to 0.600 m/s in 35.0 ms. The…
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Q: A 4.10-kN piano is lifted by three workers at a constant speed to an apartment 20.7 m above the…
A: Given,Weight of the piano, F = 4.10 kNheight of the apartment, h = 20.7 mPower delivered by each…
Q: The electric motor of a model train accelerates the train from rest to 0.540 m/s in 17.0 ms. The…
A: Given that Initial velocity (u)= 0 m/s (Since initially the train was at rest) Final velocity (v)=…
Q: When its engine of power 76 kWkW is generating full power, a small single-engine airplane with mass…
A: Given: Engine Power , P = 76 kW = 76×103W mass M= 710…
Q: A tower crane has a hoist motor rated at 167 hp. If the crane is limited to using 65.0 % of its…
A: A tower crane has a hoist motor rated at 167 hp. If the crane is limited to using 65.0 % of its…
Q: A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from…
A: (a) Calculate the force required to move the car up the rails. F = mg * sin(29) = 950 * 9.81*…
Q: A 5.40-kg block is set into motion up an inclined plane with an initial speed of v = 8.60 m/s (see…
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…
Q: A tower crane has a hoist motor rated at 155 hp. If the crane is limited to using 67.0% of its…
A: Given data: Power rating of tower crane = 155 hp Used power = 67.0% of maximum hoisting power Mass…
Q: A 3.90-kN piano is lifted by three workers at a constant speed to an apartment 22.8 m above the…
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Q: Some gliders are launched from the ground by means of a winch, which rapidly reels in a towing cable…
A: Write the given values with the suitable variables.Here, m, u, v, and d are the mass, initial speed,…
Q: A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from…
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Q: A 5.60-kg block is set into motion up an inclined plane with an initial speed of v, = 8.60 m/s (see…
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Q: A 4.0 kg block starts up a 30° incline with a friction coefficient of 0.3. If the bundle starts up…
A: Given: The mass of block is m=4.0 kg. The angle of inclination is θ=30∘. The coefficient of…
Q: 1.50 × 10³-kg car starts from rest and accelerates uniformly to 16.9 m/s in 11.9 s. Assume that air…
A: Given Mass of car = m = 1.50 × 103 kg IInitial velocity = u = 0 Final velocity = v = 16.9 m/s Time…
Q: The electric motor of a model train accelerates the train from rest to 0.810 m/s in 20.5 ms. The…
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Q: A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from…
A: Given Data:The mass of the car inclination angle Speed of the car Time From above Diagram:Force…
Q: A 4.60-kg block is set into motion up an inclined plane with an initial speed of v, = 7.80 m/s (see…
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Q: A 1.50 ✕ 103-kg car starts from rest and accelerates uniformly to 17.9 m/s in 12.8 s. Assume that…
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Q: The electric motor of a model train accelerates the train from rest to 0.765 m/s in 19.0 ms. The…
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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…
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Q: A block rests on a horizontal frictionless surface. A string is attached to the block, and is pulled…
A: The free-body diagram of the block at a particular instant is shown below. Here, a is the…
Q: Let's work through an example to find the power output of a motor. An electric motor is used to run…
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Q: A child on a tricycle is moving at a speed of 1.40 m/s at the start of a 2.05 m high and 12.4 m long…
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Q: An electric motor is used pull a 20 kg block up along an incline of angle 12.0 degrees. The…
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The 57.25 kg crate is hoisted up the θ = 31° incline by the pulley system and motor M. If the crate starts from rest and, by constant acceleration, attains a speed of 8.30 m/s after traveling 4.98 m along the plane, determine the supplied power to the motor if the crate has moved 8 m and the coefficient of kinetic friction between the plane and the crate is µk = 0.3. Neglect friction along the plane. The motor has an efficiency of 0.668.
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- A child on a tricycle is moving at a speed of 1.40 m/s at the start of a 2.45 m high and 12.4 m long incline. The total mass is 45.5 kg, air resistance and rolling resistance can be modeled as a constant friction force of 41.0 N, and the speed at the lower end of the incline is 6.80 m/s. Determine the work done (in J) by the child as the tricycle travels down the incline. JThe electric motor of a model train accelerates the train from rest to 0.760 m/s in 20.0 ms. The total mass of the train is 545 g. Find the average power delivered to the train during its acceleration.A 35.0 kg crate sits on a conveyor belt with s = 0.870. The conveyor belt starts at rest.Once it is turned on, the crate (which follows the belt, so that it stays at rest with respect to thebelt) speeds up to 2.30 m/s in a uniform fashion. How much power does the motor use to turnthe conveyor belt?
- A 5.40-kg block is set into motion up an inclined plane with an initial speed of v; = 8.20 m/s (see figure below). The block comes to rest after traveling d = 3.00 m along the plane, which is inclined at an angle of 0 = 30.0° to the horizontal. (a) For this motion, determine the change in the block's kinetic energy. J (b) For this motion, determine the change in potential energy of the block-Earth system. J (c) Determine the friction force exerted on the block (assumed to be constant). N (d) What is the coefficient of kinetic friction?The electric motor of a model train accelerates the train from rest to 0.760 m/s in 18.0 ms. The total mass of the train is 880 g. Find the average power delivered to the train during its acceleration.A 3.30-kN piano is lifted by three workers at a constant speed to an apartment 27.3 m above the street using a pulley system fastened to the roof of the building. Each worker is able to deliver 141 W of power, and the pulley system is 75.0% efficient (so that 25.0% of the mechanical energy is lost due to friction in the pulley). Neglecting the mass of the pulley, find the time required to lift the piano from the street to the apartment. min
- The loaded cab of an elevator has a mass of 2.40 × 103 kg and moves 181. m up the shaft in 28.0 s at constant speed. At what average rate does the force from the cable do work on the cab?The electric motor of a model train accelerates the train from rest to 0.830 m/s in 20.5 ms. The total mass of the train is 875 g. (a) Find the minimum power delivered to the train by electrical transmission from the metal rails during the acceleration. W (b) Why is it the minimum power?The loaded cab of an elevator has a mass of 4.20 x 10³ kg and moves 242. m up the shaft in 17.0 s at constant speed. At what average rate does the force from the cable do work on the cab?
- A tower crane has a hoist motor rated at 169 hp. If the crane is limited to using 65.0% of its maximum hoisting power for safety reasons, what is the shortest time in which the crane can lift a 5.50 x 10 kg load over a distance of 89.0 m? Assume the load is lifted at a constant velocity. t = S 仙登A box of mass M=10.0kg is moving at 12.8 m/s at the bottom of a frictionless inclined plane of angle 22.7o. The constant angle of the incline plane is unknown. The box is attached to a string that pulls with a constant tension T=345N up along the incline. At the top of the incline the box is moving at 19.3 m/s. Ignore air resistance. Find the total work done on the box and the work done by every force acting on the box. OL DELL WA 1.50 × 103-kg car starts from rest and accelerates uniformly to 18.0 m/s in 12.0 s. Assume that air resistance remains constant at 400 N during this time. Find (a) the average power developed by the engine and (b) the instantaneous power output of the engine at t = 12.0 s, just before the car stops accelerating.