The force required to punch a hole of 2 cm square in a steel sheet 2 mm thick whose shearing strength is 3.5x 10^8 N/m^2 will be :

The time required to pass the light through a glass slab of 2 mm thick is (mu_("glass")=1.5)

A steel rod of length 25cm has a cross-sectional area of 0.8cm^(2) . The force required to stretch this rod by the same amount as the expansion produced by heating it through 10^(@)C is (alpha_(steel)=10^(-5)//^(@)C and Y_(steel)=2xx10^(10)N//m^(2))

Calculate the time required to coat a metal surface of 80 cm^(2) with 0.005 mm thick layer of silver (density = 10.5 g cm^(3)) with the passage of 3A current through silver nitrate solution.

Calculate the force required to separate the glass plates of area 10^(-2)m^(2) with a film of water 0.05 mm thickness between them (surface tension of water =70xx10^(-3)N//m) )

One of the square faces of a metal slab of side 50 cm and thickness 20 cm is rigidly fixed on a horizontal surface. If a tangential force of 30 N is applied to the top face and it is known that the shear modulus of the material is 4 xx 10^(10) N//m^(2) , then the displacement (in m) of the top face is

Determine the force required to double the length of the steel wire of area of cross-section 5 xx 10^(-5) m^(2) . Give Y for steel = 2 xx 10^(11) Nm^(-2) .

A force of 5 kgf is required to cut a metal sheet. A pair of shears used for cutting the metal sheet has its blades 5 cm long, while its handles are 10 cm long. What effort is needed to cut the sheet ?

A square brass plate of side 1.0 m and thickness 0.0035m is subjected to a force F on its smaller opposite edges, causing a displacement of 0.02 cm . If the shear modulus o brass is 0.4 xx 10^(11) N//m^(2) , the value on force F is

A square aluminium of side 50cm and thickness 5cm is subjected to a shearing force of magnitude 10^(4)N . The lower edge is revetted to the floor. How much is the upper edge displaced if shear modulus of aluminium is 2.5 xx 10^(10) Nm^(-2) ?

Suppose the object in figure shown is the brass plate of an outdoor sculpture. It experiences shear forces as a result of an erthquake. The frame is 0.80 m and 0.50 cm thick. Calculate the shear strain produced in this object if the displacement x is 0.16 mm. (Shear modulus =3.5xx10^(10)Pa )