AP EAPCET (Engineering) Mechanical Properties of Fluids — practice questions
120 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice AP EAPCET (Engineering) Mechanical Properties of Fluids in the app →Newton's FIRST law is also called the law of:Newton's SECOND law states:The SI unit of force is the:Frictional force between surfaces ALWAYS acts:Static friction f_s satisfies:Kinetic friction f_k is given by:For a body on a horizontal surface, the NORMAL FORCE N equals:In circular motion at radius r and speed v, the centripetal acceleration is:The ANGLE OF REPOSE φ is related to coefficient of friction by:A 5 kg object experiences a net force of 20 N. Find its acceleration:A 10 kg block on rough horizontal surface with μ_s = 0.3 just starts moving. Force applied:A block of mass 2 kg on a smooth incline at 30°. Acceleration down the incline (g = 10):A 1500 kg car accelerates from 0 to 30 m/s in 10 s. Average force on car:In a tug-of-war, team A pulls with 200 N, team B pulls oppositely with 250 N. The rope (light) experiences netA block of mass 5 kg on a rough incline at 37° with μ_k = 0.4. Acceleration down (g = 10, sin 37° = 0.6, cos 3For a body on a 60° incline with μ = 0.5, the body:An object's WEIGHT on Earth (g = 10) is 50 N. Its MASS is:A 5 kg block is pushed with 30 N along a frictionless surface. Acceleration:A massless pulley system has two blocks: m₁ = 6 kg and m₂ = 4 kg hanging on either side. Find acceleration of The angle of repose between a block and an incline is 30°. The coefficient of static friction is:A 100 g object is moving in a vertical circle. At the TOP of the loop, for minimum speed (string just slack), Limiting (max static) friction is INDEPENDENT of:A 4 kg mass hangs from a spring scale in an elevator. Spring reads 32 N. The elevator is:A 3 kg block is pulled with F = 20 N at 30° above horizontal on rough surface (μ_k = 0.4). Find acceleration (In a uniform circular motion, the SPEED is constant but velocity changes direction. The acceleration:A car turns a corner of radius 50 m at 20 m/s. Minimum coefficient of friction needed (g = 10):A 50 kg person stands on a scale in an elevator accelerating UP at 2 m/s². Scale reading:Two equal masses (3 kg each) connected by a light string over a frictionless pulley. One on smooth horizontal A pendulum of mass m swings to amplitude angle θ. At the lowest point of swing, the TENSION in the string equaA car of mass 1000 kg moving at 36 km/h is stopped by brakes in 5 seconds. Average force exerted by brakes:Newton's first law of motion is also known as the law ofA cricket ball of mass 150 g moving at (3i+4j) m/s is hit to -(3i+4j) m/s. The magnitude of momentum change isConservation of linear momentum in a collision follows directly fromA force F acts on a 2 kg body for 3 s, changing its speed from 2 m/s to 8 m/s along the line of F. The magnituThe maximum static friction force on a body is f = μN. Static friction is best described asA 10 kg block on a frictionless surface is pulled by 20 N horizontally and 20 N at 60° above horizontal. The hImpulse equalsA body in equilibrium under several forces hasA 0.5 kg ball hits a wall at 10 m/s and rebounds at 10 m/s. The impulse on the ball isNewton's second law in vector form isA lift accelerates upward at 2 m/s². The apparent weight of a 50 kg person (g=10) isTwo blocks of 2 kg and 3 kg connected by a string are pulled by 10 N on the 3 kg block (frictionless). The accThe SI unit of force, the newton, equalsA passenger standing in a bus is thrown backward when the bus suddenly starts moving forward. This is best expOne newton is defined as the force that gives a mass of 1 kg an acceleration of:The linear momentum of a body is defined as the product of its:The impulse of a force has the same dimensions as:The action and reaction forces of Newton's third law:For a given pair of surfaces, the coefficient of kinetic friction is usually:A constant force of 20 N acts on a 5 kg body initially at rest. Its speed after 3 s is:A 0.15 kg ball moving at 12 m s⁻¹ is hit straight back along its path with the same speed. The magnitude of thA 0.04 kg bullet moving at 90 m s⁻¹ is stopped after penetrating 0.6 m into a block. The average resistive forA block just begins to slide down an incline when the angle of inclination is 30°. The coefficient of static fA 0.02 kg bullet is fired with a speed of 300 m s⁻¹ from a 4 kg gun. The recoil speed of the gun is:A 50 kg person stands on a weighing scale inside a lift accelerating upward at 2 m s⁻² (g = 10 m s⁻²). The scaA 0.5 kg stone tied to a string is whirled in a horizontal circle of radius 2 m at a speed of 4 m s⁻¹. The tenThe maximum speed at which a car can round an unbanked circular turn of radius 150 m without skidding is (μs =For a 3 kg block connected over a frictionless pulley to a 20 kg trolley (μk = 0.04, g = 10 m s⁻²), the tensioA net force F = 6t newton (t in seconds) acts on a 2 kg body initially at rest. The speed of the body at t = 4A block slides down a rough incline of 30° with coefficient of kinetic friction 0.2 (g = 10 m s⁻²). Its acceleA lift descends with a downward acceleration equal to g. The apparent weight of a passenger standing inside isA 0.2 kg ball strikes the floor vertically at 10 m s⁻¹ and rebounds at 8 m s⁻¹. The magnitude of the impulse iThe optimum (design) speed for a car on a frictionless road banked at 45° along a curve of radius 100 m is (g One bar of pressure is equal to how many pascals?One torr, the same as 1 mm of mercury, equals about how many pascals?Standard atmospheric pressure at sea level is close to which value?Pressure in a fluid is best described as which kind of quantity?Take g = 10 m/s^2 and water density 1000 kg/m^3. What is the gauge pressure at 10 m depth in a lake?What does gauge pressure measure?A tyre pressure gauge reads which kind of pressure?In a mercury barometer, the column stands at about what height at sea level?What fills the space above the mercury column in a barometer tube?A hydraulic lift piston has 50 times the area of the small one. What force does 100 N give?Hydraulic brakes in cars depend on which principle?Water flows at 2 m/s in a pipe of area 4 cm^2 into a section of area 1 cm^2. What is the speed there?Bernoulli's equation is essentially which law applied to fluid motion?Bernoulli's equation fails for which type of flow?Why can two streamlines in steady flow never cross?Above the critical speed, streamline flow of a fluid becomes what?In laminar flow, the velocities at different points have which feature?What does the word efflux mean in Torricelli's law?A tank has a small hole 5 m below the water surface. Take g = 10 m/s^2. What is the efflux speed?A spinning cricket ball swerves from its parabolic path because of what?Dynamic lift acts on a body by virtue of its what?What are the dimensions of the coefficient of viscosity?Which liquid is more viscous than water?When the temperature of a liquid rises, its viscosity does what?When a gas is heated, its coefficient of viscosity does what?For fluid flowing in a pipe, where is the layer speed zero?Viscous drag on a small sphere of radius a at speed v in a fluid of viscosity eta is given by which expressionA falling raindrop reaches terminal velocity when what happens?If a falling sphere's radius doubles in the same fluid, its terminal velocity becomes how many times?Surface tension arises because surface molecules have what?Surface energy exists at an interface where at least one substance must be what?Compared with the outside, the pressure inside a spherical liquid drop is what?A soap bubble of radius 1 cm and surface tension 0.03 N/m has what excess pressure?Why does a soap bubble have a larger excess pressure than a drop of equal size?The angle of contact is measured between which two lines?What is the angle of contact of mercury with glass like?When the angle of contact is acute, the liquid does what to the solid?Detergents added to water have what effect on the angle of contact?The word capilla, from which capillary comes, means what in Latin?A water column of 0.07 N/m, zero contact angle, in a 0.5 mm radius tube rises how high? Take g = 10 m/s^2.If a capillary tube's radius is halved, the water rise becomes how many times?Why is blood pressure greater at the feet than at the brain?At about 6 km height, atmospheric pressure drops to nearly what fraction of sea level value?The relation P = Pa + rho g h is exact for which kind of fluid?In a steady flow, which quantity stays constant along a streamline, per Bernoulli?Layers of a viscous liquid sliding over one another resemble what?What is the shear modulus of any fluid?Which common unit of pressure is equal to one newton per square metre?The bar, a unit used for gas pressure, equals how many N m-2?One hectapascal (hPa) is equal to how many pascal?One torr of pressure corresponds to a column of mercury how high?A force of 10 N acts on an area of 1 cm2. What pressure results?The pressure due to a fluid at rest at a given depth does not depend on which quantity?Force of attraction between molecules of the same substance is called what?Attraction between glass molecules and water molecules is an example of which force?In which state of matter is the cohesive force strongest?Intermolecular forces in solids and liquids act up to a distance of the order of what?