A rock of density 2500kg/m^3 with volume 0.002m^3 falls from rest in a viscous medium. The rock is acted on by a net constant downward force of 30N (combination of gravitational and buoyant force Fb) and a viscous retarding force Fd, proportional to it’s velocity, v:Fd= 5v i) Draw a free body diagram showing forces acting on the rock ii) Explain what is meant by ‘viscous medium’ iii) Calculate the mass of the body iv) Calculate initial acceleration of body v) Calculate the terminal velocity of the rock (iii,iv,v)

Q: Q2: A basketball of circumference (76.5 cm) is forced to the bottom of a swimming pool and then…

A: Buoyant force on the basketball will be given by: Fb = ρ*V*g ρ = density of water = 1000 kg/m^3 V =…

Q: An object has a volume of 3 x 10 cm lies at the bottom of the sea. If the force required to lift the…

A: The buoyant force is given by  F' = V x d x g  where, V is the volume immersed, d is the density of…

Q: Skydivers can create aerodynamic shapes in the air as they fall. The use of a parachute changes that…

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Q: etermine the lift (force that is responsible to fly an aircraft) in Pound-force of a win 50 square…

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Q: A wooden cube 13 cm in each direction is floating so that 55% of it is under water. How much mass…

A:

Q: 3. A beach ball (the inflated plastic balls that get batted around at beaches or gradua- tions) has…

A: Step 1:The beach ball of mass 150 g and a diameter of 39 cm is fastened to the bottom of the pool by…

Q: 4b. -The drag force, F4, acting on a submarine depends on the characteristic length, L, velocity, V…

A: Write the dimensions of the variables. Here, μ is the dynamic viscosity and ρ is the density. Here,…

Q: Consider an object falling through air, where Po is the density of the object, pPair is the density…

A: The Terminal Velocity of object

Q: On land, the most weight a caveman can hold above his head is 245N. Assuming the density of rock is…

A: Given:-          Maximum weight on land (w) = 245 N         Density of rock (ρR) = 2200 kg/m3 Now,…

Q: Question: Calculate the gauge pressure inside a soap bubble 2.00 × 104 m in radius using the surface…

A: For a bubble, gauge pressure is given by:- ∆P=4σR where, ∆P=Gauge Pressureσ=Surface…

Q: A ball of 0.004-m in diameter and density of 7146 kg/m³ takes 0.13 second to cross a 26.9 cm of…

A: Diameter of ball = 0.004 m Radius, r = diameter/2 = 0.002 m Density of ball, ρs = 7146 kg/m3 Density…

Q: Question 4 A car engine with a given weight of w, is suspended in air by a cable that is connected…

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Q: A plastic ball in a liquid is acted upon by its weight and by a buoyant force. The weight of the…

A: weight of the ball (w) = - 5.7 N bouyant force (FB) = 9.5 N Let the external force = F

Q: A skydiver of mass 65.0 kg including parachute, floats downward suspended from his parachute having…

A: Given data :      Mass, m = 65 kg       Area, A = 25.06 m 2       density of air, ρ=1.25 kg/m3…

Q: A body weighs 10.2 N in air and 8.4 N when fully immersed in water. The buoyant force acting on the…

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Q: 3. A bucket is tied at the end of a 1" thick rope. It is circulated in a vertical plane of a radius…

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Q: totally immersed in (a) water and (b) mercury (p = 13.6 g/cm). What will be the initial acceleration…

A: According to archemede's principle  Bouyant force = weight of liquid displaced

Q: The drag force per unit length, F, acting on a cylinder of diameter D moving at velocity v…

A: Given data ρ=1.3 kg/m3v=61 m/sD=0.1 m Here, D is the diameter of the cylinder. V is the velocity of…

Q: An air-track cart with mass mi = 0.34 kg and initial speed vo= 0.85 m/s collides with and sticks to…

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Q: Bobbing for apples: the density of an apple is 950 kg/m^3 When you place an apple with volume…

A: Density of apple,  Density of water,  Volume of apple in water,

Q: PODAR Name: Subject: Science Std: VIII Roll No: Date: Topic: Force & Pressure 1. In Fig, two boys A…

A: For a more thorough understanding, I've included further details. You may include them if required…

Q: Draw a free-body diagram that shows the gravitational and buoyant forces on a 180 N canoe floating…

A: Given weight of  canoe = 180N

Q: 1.0 kg of lead that is sinking to the bottom of a lake has more buoyant force on it than 1.0 kg of…

A: Given Data : The density of the water is given as ρwater=1001.8 kgm3 The density of the lead is…

Q: Match the answers with questions for blocks B and C. 20 g 10 cm D B E 20 g 10 cm 40 g 10 cm 40 g 20…

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Q: Find the maximum weight a boat can hold without sinking? If you are given the dimensions and mass…

A: To determine the maximum weight a boat can hold without sinking, you would need to follow these…

Q: III. SAME VOLUME SECTION Mass (kg) 2.00 kg 4.00 kg Material Volume (L) Density (kg/L) Does it float?…

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Q: Juanita bought a balloon filled with helium. To keep the balloon from escaping, she tied the string…

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Q: A speedboat moving at 35.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the…

A: Initial velocity of speedboat (u) = 35 m/s distance of no-wake buoy marker (d) = 100 mAcceleration…

Q: Select the environment: Distance between point A and B = 60 cm Earth (g=9.8 m/s²) Density of the…

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Q: Q2: The space between two large plane surfaces kept 2.5 cm apart is filled with liquid of viscosity…

A: Given: The space between two plane surfaces is d = 2.5 cm The coefficient of viscosity of the liquid…

Q: 2. The following masses are floating in outer space with no other masses around them. Determine the…

A: Gravitational force exists between all the objects with mass of mass M1 and M2 and is always…

Q: What is buoyant force on a sea diver

A: Note: Dear student be careful while taking the value of density of sea water. We have taken here the…

Q: Current Attempt in Progress The density of ice is 917 kg/m³, and the density of sea water is 1025…

A: density of ice = 917 kgm3density of sea water = 1025 kgm3volume of floating ice peice (V) = 6.74 m3…

Q: A car engine with a given weight of w, is suspended in air by a cable that is connected to a…

A:

Fluid Pressure

The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.

Gauge Pressure

Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.