work (800 N)(4 m) power 1600 W time 2s

Q: 18. A cable with mass 12 kg/meter is lifting a load of 150 kg that is initially at the bottom of a…

A: According to my knowledge, the mass of the cable should be ½ kg/meter. Consider x as the lift…

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by neans of a…

A: distance moved in each stage = 13 m

Q: An escalator is used to move 20 passengers every minute from the first floor of a department store…

A:

Q: A model train's electric motor accelerates it from a standstill to a speed of 0.740 m/s in 25.0 ms.…

A:

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a…

A: mass (m) = 77 kg Initial speed (u) = 0 m/s Final speed (v)= 3.60 m/s distance moved in each stage…

Q: A car engine supplies a power of 300,000 W while traveling at constant speed of 28 m/s. Find the…

A: Given in question -  Power(P) = 300,000 W                                   Speed(V) = 28 m/s To…

Q: A helicopter lifts a 80 kg astronaut 20 m vertically from the ocean by means of a cable. The…

A: (a). The work done by helicopter is

Q: A slingshot is made of a yoke, two strands of rubber band and a leather pocket. The rubber bands…

A: Springs possess elastic potential energy which gets stored in them when they are stretched from…

Q: The electric motor of a model train accelerates the train from rest to 0.540 m/s in 30.0 ms. The…

A: Power is defined as the rate of work done. Using the work-energy theorem we will find out the…

Q: A block of mass 2.50kg is pushed 2:20m along a frictionless horizontal table by a constant 16.0 N…

A:

Q: A 4-N force is applied to a 2-kg object that is moving at 3 m/s. This force is parallel to the…

A: Work done = Force × displacement

Q: A figure shown a motor pulling an object in an inclined surface. determine the power required to…

A:

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a…

A: Given:mass m = 64 kgdistance travelled in each step ∆h = 15m

Q: A 3.50-kN piano is lifted by three workers at constant speed to an apartment 25.0 m above the street…

A: GivenWeight of Piano, W=3.5 kN=3.5×103 NHeight above the street, h=25 m

Q: 19. A shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 25° below…

A: The free-body diagram of the given problem is:

Q: Consider the figure [20 below: 120 N m-30.0 kg 1-5.00 N d-0.800 m Calculate the total power (in…

A:

Q: An escalator is used to move 20 passengers every minute from the first floor of a department store…

A:

Q: Awater-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle…

A: We have, Mass, m = 81 Kg Initial speed u = 6.5 m/s Final speed, v = 10.1 m/s

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a…

A:

Q: An overhead garage door has two springs, one on each side of the door. A force of 14 pounds is…

A:

Q: A 3.90-kN piano is lifted by three workers at a constant speed to an apartment 22.8 m above the…

A:

Q: 22. A conveyor belt of length 15.0 m is at 15° with respect to the ground or horizontal. It can hold…

A:

Q: You apply a constant force of (33 N) i- (42 N) j to a loaded supermarket pushcart as it undergoes a…

A: From the question, it is given that- Constant force applied: F→=(33N)i^-(42N)j^Displacement of…

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a…

A:

Q: A 200.0 kg  block is pulled at a constant speed of 7.52 m/s across a horizontal floor by an applied…

A: Given, a mass m = 200.0 kg  block is pulled at a constant speed of v=dxdt=7.52 m/s across a…

Q: A student with a mass of 80.0 kg runs up three flights of stairs in 12.0 sec. The student has gone a…

A: The equation for the work done is given as,

Q: A 3.50-kN piano is lifted by three workers at constant speed to an apartment 25.0 m above the street…

A:

Q: A plane weighing 223 kN (22.7 tons) lands on an aircraft carrier. The plane is moving horizontally…

A: Given,

Q: An overhead garage door has two springs, one on each side of the door. A force of 15 pounds is…

A: Let the restoring force of the spring having spring constant k is denoted by F. The spring is…

Q: The mass of an elevator and its occupants is 1200 kg. The electric motor that lifts the elevator can…

A:

Q: A rescue cable attached to a helicopter weighs 2 lb/ft. A 190-lb man grab the end of the rope and is…

A: Work done by the body is given by the energy required to move an object from one place to another.…

Q: A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle…

A: Given :- mass of water skier = 61.2 kg initial velocity = 5.1m/s speed increases to 12.1 m/s

Q: #15 A person pushes a m = 2.00 kg carton a distance d= 7.20 m along the floor by a constant force of…

A: mass of carton (m) = 2 kg distance moved (d) = 7.20 m Force applied (F) = 10 N Angle below the…

Q: Determine the work done by an electric motor lifting an elevator and its occupants weighing 2200 lb…

A: Given :     Weight of the elevator + occupants, F = 2200 lb     Distance between each floor = 15 ft…

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a…

A:

Q: 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…

A:

Q: a man and his son weigh 81.8 kg and 41 kg respectively. They climb identical ladders to a height of…

A: mass of man, M = 81.8 kg  mass of son, m = 41 kg  height, h = 6 m  time, t = 30 s

Q: The electric motor of a model train accelerates the train from rest to 0.760 m/s in 20.0 ms. The…

A:

Q: If a force is conservative, we can define a potential energy for it.  Group of answer choices True…

A:

Q: A car that weighs W = 6600 N outputs a con- stant power P = 73 kW moves along a level highway with a…

A:

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a…

A: a)  Work done by the applied force in first stage is,

Q: A 3.30-kN piano is lifted by three workers at a constant speed to an apartment 27.3 m above the…

A:

Q: How much time will it take a a winch motor with a POWER of 7 horsepower to lift a 1600 kg crate…

A:

Q: A cable with length 17m has a mass of 34kg and is hanging off of the side of a building.…

A: Given: The mass of the rope is 34 kg. The length of the rope is 17 m. The acceleration due to…

Q: Which of the following requires more work? Increasing a particle's speed from 30 to 35 m/s none of…

A: The amount of energy required to change the velocity of an object is equal to the change in kinetic…