TG EAPCET 2024 (Online) 10th May Morning Shift | Elasticity Question 3 | Physics

A block of mass 2 kg is tied to one end of a 2 m long metal wire of $1.0 \mathrm{~mm}^2$ area of cross-section and rotated in a vertical circle such that the tension in the wire is zero at the highest point. If the maximum elongation in the wire is 2 mm , the Young's modulus of the metal is

(Acceleration due to gravity $=10 \mathrm{~ms}^{-2}$ )

$1.0 \times 10^{11} \mathrm{Nm}^{-2}$

$1.2 \times 10^{11} \mathrm{Nm}^{-2}$

$2.0 \times 10^{11} \mathrm{Nm}^{-2}$

$0.2 \times 10^{11} \mathrm{Nm}^{-2}$

TG EAPCET 2024 (Online) 9th May Evening Shift

MCQ (Single Correct Answer)

-0

If the length of a string is $P$ when the tension in it is 6 N and its length is $Q$ when the original length of the string is

$3 P+4 Q$

$3 P-4 Q$

$4 P+3 Q$

$4 P-3 Q$

TG EAPCET 2024 (Online) 9th May Morning Shift

MCQ (Single Correct Answer)

-0

A steel wire of length 3 m and a copper wire of length 2.2 m are connected end to end. When the combination is stretched by a force, the net elongation is 1.05 mm . If the area of cross-section of each wire is $6 \mathrm{~mm}^2$, then the load applied is (Young's moduli of steel and copper are respectively $2 \times 10^{11} \mathrm{Nm}^{-2}$ and $1.1 \times 10^{11} \mathrm{Nm}^{-2}$ )

180 N

90 N

135 N

120 N

TS EAMCET 2023 (Online) 12th May Evening Shift

MCQ (Single Correct Answer)

-0

Two wires $A$ and $B$ of same length, same radius and same Young's modulus are heated to same range of temperatures. If the coefficient of linear expansion of $A$ is $\frac{3}{2}$ times that of $B$, then the ratio of the thermal stresses produced in the two wires $A$ and $B$ is

$2: 3$

$9: 4$

$4: 9$

$3: 2$

PREVIOUS NEXT

TS EAMCET Subjects