Why does a three-legged support work better than one with four legs?
Q: What is the power of the force required to move a 4500 kg elevator cab with a load of 1800 kg upward…
A: Given that,Mass of the elevator : m = 4500 (kg)Mass of load : M = 1800 (kg)The speed : v = 3.80…
Q: what is the power of a crane that lifts it uniformly in a hurry to a height of 5 meters during 5…
A: The work done is calculated as, W=mghW=200×9.8×5W=9800 J
Q: Does the kinetic energy of a car change more when it goes from 10 to 20 km/h or when it goes from 20…
A: The change in kinetic energy when the car moving from 10 to 20 km/h is ΔKE=12m20 km/h2-10…
Q: A 1,000-W motor powers a hoist used to lift cars at a service station. (a) How much time would it…
A: Power is defined as the work done per unit time. P=Worktime When a mass is raised to some height, we…
Q: When I throw my keys straight up in the air and let them fall, why is there more Kinetic energy and…
A: According to conservation of energy (Total energy )final = (total energy ) initial
Q: A 150 pound (68 kg) student races up the stairs, traversing a total height of 12 feet (3.7 meters)…
A: GIVEN :- Mass of the student = m = 150 pond = 68 kg total height travelled = h = 12…
Q: (b) Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00…
A: (a) Given that Mass of car(m) =800kg Speed( v) =85 km/h=85*5/18 m/sec Distance( d) =125m
Q: Name the physical quantities related to the following units: joule
A: Joule: In the International System of Units (SI), a joule is a unit of work or energy equal to the…
Q: Conservative forces lose no mechanical energy to
A: Any energy of the system is lost into the heat energy. In the case of the conservative force, there…
Q: Energy can neither be created nor be destroyed. Then what happens to the energy spent against…
A: Friction is simply energy being converted into heat energy. So all the energy spent overcoming…
Q: what is the force applied by the worker?
A: Given: Weight = 50 N Frictional force = 10 N Distance = 5 m Angle = 370
Q: A ball is atop a ramp. There is a ball at the bottom of the ramp at rest. If the ball rolls down and…
A: When a ball is at the top and rolls down, the ball’s total energy in the form of potential energy…
Q: How far will a 75 kg skier traveling at 20 m/s go up a 100 incline that has a coefficient of…
A: Given Mass m = 75 kg initial speed u = 20 m/s θ =10⁰ Coefficient of friction μ = 0.05
Q: if you pull a wagon with a force of 200 Newton's and it takes you 20 seconds to pull it 10 meters of…
A:
Q: Loan pushes a box of mass 11.5 kg is pushed across a rough surface (Hg = 0.25) for a distance of 4.8…
A: As per our guidelines we will solve first question for you. To get remaining question solved please…
Q: When lifting a dumbbell up and down the total work done is equal to zero True or False
A:
Q: How do I calculate the power of an object of mass 50kg that was moved upward at an inclination of 15…
A:
Q: Explain why a diver pulls his hands and legs close to his body when jumping from a diving board into…
A:
Q: What is the power of the force required to move a 4500 kg elevator cab with a load of 1800 kg upward…
A:
Q: An energetic person is powerful. Is the statement true or false. true false lack of information
A: Power is rate of energy transfer. P = E/t. So, a person who is more energetic ,has more power.
Q: The boy puts a stone weighing 20 g in a slingshot and stretches the elastic by 8.0 cm with a force…
A: In a sling shot, energy is used to stretch the string by a distance d from equilibrium point ,…
Q: A rickshaw puller pulls the rickshaw by applying a force of 160 N. If the rickaw moves with constant…
A:
Q: If 3.0 J of work is done in raising a 225 g apple, how far is it lifted?
A: Given W =3.0J mass = 225g so, F = 0.225 kg x 9.8 m/s2 = 2.205N
Q: A uniform cable hanging over the edge of a tall building is 80 ft long and weighs 45 lb. How much…
A: Workdone = 787.5 lb ft
Q: For a ball thrown up into the air, potential energy is highest right before it contacts the ground?
A: For a ball thrown up into the air, potential energy is highest right before it contacts the ground?
Q: n 10 seconds10 seconds, a 1.5-tonne vehicle accelerates to 90 mph90 mph. Calculate the engine's…
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Why does a three-legged support work better than one with four legs?
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