4. A weightlifter raises a 150-kg barbell from the floor to a height of 2.2 m in 0.80 s. What is his average power output during the lift?
Q: 1. A 10 meter rope of uniform density is lying on the ground. The rope has a mass of 60 kilograms.…
A: Required : Work done to lift the rope.
Q: 14:57 จ. 25 ก.ย. 4G 32% 6 จาก 7 Q6: The left end of the cord is pulled over a pulley, of negligible…
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Q: 10. A 2200 kg truck travelling at 68 km/h slams on the brakes and skids to a stop. The frictional…
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Q: 1. A 75 kg skier starts with an initial speed of 2 m/s down a 40 m high ramp. They launch off a ramp…
A:
Q: A person pulls a box with a uniform velocity over a surface. The kinetic frictional force between…
A: Explanation Power is defined as the work done per unit second. If W is the work done in time t then…
Q: A 67 kg yak has an average power output of 200 W. How long can a yak climb a 3km high mountain?…
A:
Q: 16. A diesel-powered crane (mc = 2.93 x 10° kg) is lifting a heavy block of concrete mb = 8.44 x 104…
A:
Q: 18. A 4.0 kg block initially traveling at 5.0 m/s slides up an incline, reaching a vertical height…
A:
Q: 4. In a time t=18.00 s, a 60.0-kg student runs at a steady pace up two flights of stairs whose…
A: Given data: Time (t) = 18.00 s Mass (m) = 60.0 kg Vertical height (h) = 7.80 m Required: Power…
Q: 7. A young girl (m = 30 kg) rides a skateboard (m = 3.2 kg) at a speed of 4.2 m/s. (a) How much work…
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Q: A weighlifter lifts a 50-kg barbell a vertical height of 2.0 m in 5.0 s. What is the average power…
A:
Q: 9 A box moves on a frictionless horizontal surface under the influence of the two forces = F₁ = (50î…
A: Power = It is the dot product of force vector to the velocity vector.
Q: A bag of wheat weight 320 kg .To what height should it be raised so that potential energy is 8460 J?…
A:
Q: A 650 kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a…
A: Given, vf= 110 ms, d=400 m, fk=1200 N, vf= 0 ms, t=7.30 s…
Q: You can think of the work-energy theorem as a second theory of motion, parallel to Newton's laws in…
A:
Q: 3. A 100-Kg block is being pulled up a slope by an electric motor as shown. Determine the power…
A: Given: The mass of the block is 100 kg. The velocity is 1.5 m/sec. The coefficient of friction is…
Q: An escalator has the capacity to lift a maximum of 15 people from ground floor to the top floor…
A: Given data: Number of people = 15 Height (h) = 20 m Time (t) = 40 seconds Average mass of each…
Q: A 600-N Marine ir 10.0-m vertical ro rc
A: Given: Force, F=600 N Distance=10 m time=8 sec
Q: A 2000-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 10.00 m…
A: Given information:Mass of pile drive, mpd=2000 kgInitial distance of the driver(yid)=10+0.3=10.3…
Q: 6.52. A 20.0-kg rock is sliding on a rough, horizontal surface at 8.00 m/s and eventually stops due…
A: Given; mass = m =20 kg initial velocity vi = 8 m/s coefficient of kinetic friction μk =0.200 To Find…
Q: A (6.40x10^1) kg woman runs up a flight of stairs in 5 s. Her net upward displacement is 5 m. What…
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Q: 4. A large water tank is filled by pumping water into it from a reservoir below, using electric…
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Q: 13. A block launched at Figure P9.13 speed v down an in- cline slides down the incline (there is…
A: solution: The block is sliding along the incline rough plane. As the plane is rough there is a loss…
Q: Why is it tiring to push hard against a solid wall even if no work is done? A 75 kg firefighter…
A: Q 1) We get tired because we use our energy to contract the muscles. We try to push the wall using…
Q: 1. Two blocks was pulled by a rope with a force of 50 N, the masses of blocks 1 and 2 are 2 kgs.,…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: 3. A record was set for stair climbing when a man ran up the 2500 steps of the Empire State Building…
A:
Q: 5. A 0.50-kg ball is thrown vertically upward with an initial speed of 16.0 m/s. What is the kinetic…
A: Given Mass of ball = m = 0.50 kg initial velocity= u = 16 m/s We have to calculate the kinetic…
Q: 4. A 73 kg skier starts at rest at the top of a 100 m high hill. He skies down this hill and back up…
A:
Q: 1. A 0.66-kg object with an initial velocity of 3.30 m/s in the positive x-direction is acted on by…
A: According to guidelines we need to solve only first question kindly repost other questions in the…
Q: 2. While training for the upcoming UAAP season, a 60-kg athlete does 30 pushups in a minute,…
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Q: 1. The shot is 1.2 m above the ground at 10 m/s when a shot-putter fires a 5 kg shot. It reaches 5 m…
A: Initial kinetic energy = (1/2)×mv2 Ki = (1/2)×5×102 = 250 J Initial potential energy = mgh Ui =…
Q: A bag of wheat weight 280 kg.To what height should it be raised so that potential energy is 8900 J?…
A: Given data : Mass of the bag = m Potential energy = P•E Acceleration due to gravity =…
Q: A 1,452 kg sports car accelerates from rest to 27.1 m/s in 12.3 s. What is the average power output…
A: Given data: Mass of sports car is, m=1452 kg. Initial speed of car is, u=0 m/s…
Q: A fully loaded, slow-moving freight elevator has a cab with a total mass of 1500 kg, which is…
A: Write the given values with suitable variables. M=1500 kgh=60 mt=3.5 min=210 sm=930 kg Here, M, h,…
Q: 4. An Olympic weightlifter snatches 100kg. In a snatch, the barbell is moved from a stationary…
A:
Q: Three blocks with masses m1 = 4.31 kg, m2 = 8.73 kg, and m3 = 17.2 kg, respectively, are attached by…
A:
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