TS EAMCET Mechanical Properties of Solids — practice questions
111 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice TS EAMCET Mechanical Properties of Solids 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:Which of the following is the correct definition of **stress** in a deformed body?A material that returns to its original shape once the deforming force is removed is said to beThe SI unit of Young's modulus isOn the stress-strain curve of a ductile material, the **proportional limit** is the point up to whichA uniform pressure $P$ is applied isotropically to a solid sphere of bulk modulus $K$. The fractional change iThe Poisson's ratio of a material is defined asThe theoretical range of Poisson's ratio for an isotropic material isThe elastic potential energy stored per unit volume in a stretched wire (within the elastic limit) isTwo blocks of 2 kg and 3 kg connected by a string are pulled by 10 N on the 3 kg block (frictionless). The accWhat are the dimensions of Poisson's ratio for a stretched wire?Within what range does Poisson's ratio lie for steels?Which value is nearest to Poisson's ratio of aluminium alloys?Why is stress not treated as a vector quantity even though force is?For which states of matter is the bulk modulus meaningful?A rubber-like elastomer is notable in elasticity because it does what?Which elastic modulus is defined as the ratio of tensile stress to tensile strain?A wire hangs from a ceiling with weight F at its end. What is the tensile stress at any cross-section of area Which statement about Hooke's law for a metal wire is correct?What is the property by which a body regains its shape after the force is removed?Which substance is closest to an ideal plastic?A stretching force gives rise to which kind of restoring stress?Tensile and compressive stress together are also called what?A rod of length L gets longer by delta L. What is the longitudinal strain?Which stress arises from forces applied parallel to a face of a body?For a very small shear angle theta, the shearing strain is nearly what?At theta = 10 degrees, how much does tan theta differ from theta?A solid sphere in a fluid under high pressure undergoes which stress?What does hydraulic compression change in a solid body?Volume strain is defined as which ratio?Within the elastic limit, how are stress and strain related?In stress = k x strain, what is the constant k called?Is Hooke's law valid for every material?Up to which region of a metal's stress-strain curve does Hooke's law hold?What is the yield point of a material also called?A wire kept stressed past its yield strength is unloaded. What remains?What do we call the maximum stress a material bears before fracture begins?A material whose ultimate strength and fracture points lie close is what?What name is given to rubber-like substances that can be stretched to large strains?For a given material, the strain for a given stress under tension compared with compression is what?Which formula gives Young's modulus Y of a wire of length L and area A?A steel and a copper wire of equal size carry equal loads. Which stretches less?Which material among these has a rather small Young's modulus?A wire has twice the radius of another of equal length and material. Same load: extension?A steel rod, radius 10 mm, length 1.0 m, is pulled by 100 kN (Y = 2.0e11 Pa). Its elongation is about what?The ratio of shearing stress to shearing strain is called what?Another name for the shear modulus is what?For most materials the shear modulus G is roughly what fraction of Young's modulus Y?A lead slab (G = 5.6e9 Pa) is sheared by stress 1.8e6 Pa over L = 0.5 m. The top edge moves how far?Why does the bulk modulus formula carry a negative sign?What is the reciprocal of the bulk modulus called?How do bulk moduli of solids compare with those of liquids and gases?Water has B = 2.2e9 Pa. A pressure rise of 1.0e7 Pa changes its volume by about what fraction?Work done in stretching a wire is stored as which energy?A wire has stress 4.0e8 Pa and strain 2.0e-3. What is its stored energy per cubic metre?Poisson's ratio is the ratio of which two strains?Which strain is called the lateral strain in a stretched wire?Poisson's ratio for steel lies in which range?Why are bridge beams given an I-shaped cross section?In a loaded beam, sag is proportional to which power of the depth d?What is the sideways bending of a deep bar under off-centre load called?To reduce a beam's bending for a given load, the material should have what?Why are heavy-duty crane ropes made of many thin braided wires?A crane rope must not stretch past its yield strength. The minimum area A is given by what?In a human pyramid, the bottom performer weighs 60 kg and the whole group 280 kg. His legs carry what mass?Is a real steel bar perfectly rigid?Which type of strain involves no change in shape, only in volume?The stress at which a material first deforms plastically is called what?What does elasticity let a body do once the distorting force is removed?A deformed object stays deformed after the load is removed. This behaviour is called what?What causes elastic behaviour in rubbers and other polymers?In a metal under load, which feature changes size and shape elastically?Under Hooke's law, a perfectly elastic object shows what?Real elastic materials stay purely elastic only up to what deformation?A higher elastic modulus of a material indicates what about its deformation?Which modulus applies to the extension or compression of a body?What does the elastic limit (yield strength) of a material represent?What is the SI unit of the elastic modulus?Which dimensions does the elastic modulus carry in terms of L, M and T?On what scale is the elastic modulus of most common engineering materials?Which scientist first formulated the linear force-extension law in 1675, published in 1678?What did Hooke's Latin phrase "Ut tensio, sic vis" mean?