A large roller in the form of a uniform cylinder is pulled by a tractor to compact earth; it has a 180-cm diameter and weighs 10 kN. If frictional losses can be ignored, what average horsepower must the tractor provide to accelerate it from rest to a speed of           14.4 kph in a horizontal distance of 3 m?

Q: The loaded cab of an elevator has a mass of 4.70 × 103 kg and moves 191. m up the shaft in 24.0 s at…

A: Calculate the constant speed at which the elevator is moving. v=Dt=191 m24 s=7.958 m/s Here, v is…

Q: The loaded cab of an elevator has a mass of 3.0* 103 kg and moves 210 m up the shaft in 23 s at…

A: Given:  mass, m = 3 x 1000 = 3000 kg  distance, s = 210 m  time, t = 23 s

Q: A 1300-kg car moving on a horizontal surface has speed v = 65 km/h when it strikes a horizontal…

A:

Q: A 1000N block was pushed by a force P of 1500N up an incline upward to the right at a slope of 3…

A:

Q: Consider a system of an 85.0 kg man, his 19.5-kg dog, and the earth. The gravitational potential…

A:

Q: The loaded cab of an elevator has a mass of 3.50 × 10³ kg and moves 244. m up the shaft in 18.0 s at…

A:

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

A: (given) Mass of bowling balls = 15 kg                     Radius (r) = 8 m    By compressing, ∆s = 2…

Q: In physics, what conditions must be satisfied if work is to be done?

A:

Q: Consider a vertical elevator whose cabin has a total mass of 800 kg when fully loaded and 150 kg…

A:

Q: A block of mass 0.610 kg is pushed against a horizontal spring of negligible mass until the spring…

A: Given data, mass of the block, m = 0.610 kg force constant, K =  450 N/m radius of the track, R = 1…

Q: An object of mass 0.125 kg that is attached to a string spins on a frictionless table m = cm with…

A: The centripetal force acting on the object is, F=mv2r=0.125 kg85 cm/s0.01 m1 cm240 cm0.01 m1…

Q: A 1.08E+2 kg crate is being pushed across a horizontal floor by a force P that makes an angle of…

A:

Q: The loaded cab of an elevator has a mass of 4.70 x 10° kg and moves 233. m up the shaft in 21.0 s at…

A: Given Information:- Mass of the loaded cab of the elevator is m=4.70×103 kg Distance h=233 m Time…

Q: The figure shows a thin rod, of length L = 1.60 m and negligible mass, that can pivot about one end…

A:

Q: A block of mass 0.640 kg is pushed against a horizontal spring of negligible mass until the spring…

A: Using conservation of energy initial kinetic energy at A = final kinetic energy at top + final…

Q: The loaded cab of an elevator has a mass of 3.0 × 10³ kg and moves 210 m up the shaft in 23 s at…

A:

Q: A single force acts on a I kg panticle-like object in such a way that the position of the object as…

A:

Q: I have a motor that is rated for 6000 W. What is the maximum amount of work that the motor can do in…

A: Given data The power of the motor is P = 6000 W The time taken to work is t = 10 s The mass of the…

Q: A simple pendulum 2.6 m in length is released with a push when the support string is at an angle of…

A: Length of pendulum = 2.6 m initial angle = 45oinitial speed = 1.25 m/sg = 9.8m/s2

Q: A 500 kg elevator cab is descending with speed vo = 4 m/s when the winch system that lowers it…

A:

Q: The loaded cab of an elevator has a mass of 4.80 × 10³ kg and moves 227. m up the shaft in 27.0 s at…

A:

Q: At what height does a 100 (N) load have a potential energy of 10 (J) relative to the ground?

A: The expression for potential energy (PE) is given as, PE = F×h, where 'F' is the force and 'h' is…

Q: When a father takes his daughter out for a spin in a stroller, he exerts a force F>with a…

A:

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: An engine develops 10 kW of power. How much time will it take to lift a mass of 200 kg to a height…

A: Given data :- Power P = 10 kW = 10 × 1000 W = 10000 W mass m = 200 kg height h = 40 m g = 10 ms-2

Q: While training for a dog show, a 3.8 kg dog does 32 pushups in a minute, displacing its center of…

A:

Q: A 1.26E+2 kg crate is being pushed across a horizontal floor by a force P that makes an angle of…

A: Along the horizontal direction,

Q: 17.25) Compute the power required to overcome drag on a  truck with a drag coefficient of 0.75 when…

A: Given DataCd=0.75V=65kmph=18.056m/sT=40°Cw=8fth=12ftA=8×12=96ft2

Q: The loaded cab of an elevator has a mass of 4.70 x 10° kg and moves 233. m up the shaft in 21.0 s at…

A: mass m=4.7*103 Kg displacement x=233 m time t=21 s To find: Power, P=?

Q: The potential energy of a system is described the the expression, U = axª – Bx² + y At what values…

A:

Q: A small block (215 g) is released from rest at point A inside a smooth hemispherical bowl of radius…

A:

Q: A box of unknown mass is sliding with an initial speed v₁ = 4.30 m/s across a horizontal…

A: Intial velocity of box = 4.3m/s Rough section of floor=2.8m Coefficient of kinetic friction=0.1 Let…

Q: An object is sliding down a frictionless incline of angle 48.8 degree. Given the potential energy of…

A: Given info: Angle of inclination, θ=48.8° Potential energy of the object at the top, P.E=7.73 J…

Q: The loaded cab of an elevator has a mass of 4.70 x 10° kg and moves 233. m up the shaft in 21.0 s at…

A: Given: The mass of the elavator is 4.7x103 kg. The displacement of the elevator is 233 m vertically.…

Q: A 75 kg road bicycle racer rides down the highway from Pikes peak. During one stretch of the ride,…

A:

Q: How much work is done by the dog against gravity?

A: STEP 1: The bucket’s mass as a function of height can be represented by the two-point form of the…

Q: In an amusement park, a car rolls on a track as shown below. Find the speed (in m/s) of the car at…

A: Given data  The initial height of the car is: h = 44 m The height of point A is: hA = 17 m The…

Q: The loaded cab of an elevator has a mass of 1.40 × 10° kg and moves 246. m up the shaft in 21.0 s at…

A: The rate of the doing of the work done by the force at a given instant is called instantaneous power…

Q: onsider the mechanical energy of a body in geostationary orbit above the Earth's equator, at…

A: Given:- Consider the mechanical energy of a body in geostationary orbit above the Earth's equator,…

Q: The loaded cab of an elevator has a mass of 2.40 × 10° kg and moves 233. m up the shaft in 17.0 s at…

A: Given mass of a cab = 2.40 × 103 kg ddistance moved = 233 m time = 17 sec speed = constant We have…

Q: Consider the figure below: 120 N m = 30.0 kg f = 5.00 N d = 0.800 m w N Calculate the total power…

A:

Q: A pump lifts water at the rate of 6 m^3/s to a height of 120 m and the friction loss in the pipe is…

A: