MCQ
The effective spring constant of two spring system as shown in figure will be 
  • $K_1 + K_2$
  • B
    $K_1K_2/(K_1 + K_2)$
  • C
    $K_1 -K_2$
  • D
    $K_1K_2/(K_1 -K_2)$

Answer

Correct option: A.
$K_1 + K_2$
a
For Parallel combination $ K = K_1 + K_2$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A cylindrical vessel filled with water is released on an inclined surface of angle $\theta$ as shown in figure.The friction coefficient of surface with vessel is $\mu( < \tan \theta)$.Then the contact angle made by the surface of water with the incline will be
A cube of external dimension $10\  cm$ has an inner cubical portion of side $5\  cm$ whose density is twice that of the outer portion. If this cube is just floating in a liquid of density $2\  g/cm^3$, find the density of the inner portion
Two bodies $A$and $B$ have thermal emissivities of $0.01$ and $0.81$ respectively. The outer surface areas of the two bodies are the same. The two bodies emit total radiant power at the same rate. The wavelength ${\lambda _B}$ corresponding to maximum spectral radiancy in the radiation from $B$ is shifted from the wavelength corresponding to maximum spectral radiancy in the radiation from $A$, by $1.00\mu m$. If the temperature of $A$ is $5802\;K$
Figure shows the V−T graph for two particles P and Q. The relative velocity of P w.r.t. Q is:

A body of mass $2\, kg$ is thrown up vertically with K.E. of $490$  joules. If the acceleration due to gravity is $9.8$$m/{s^2}$, then the height at which the K.E. of the body becomes half its original value is given by ............ $\mathrm{m}$
A series AC circuit has a resistance of $4\Omega$ and a reactance of $3\Omega.$ The impedance of the circuit is:

  1. $5\Omega$

  2. $7\Omega$

  3. $\frac{12}{7}\Omega$

  4. $\frac{7}{12}\Omega$

The velocities of $A$ and $B$ are $\vec{v}_A=2 \hat{i}+4 \hat{j}$ and $\vec{v}_B=3 \hat{i}-7 \hat{j}$ Velocity of $B$ as observed by $A$ is ..........
The Poisson's ratio of a material is $0.5$. If a force is applied to a wire of this material, there is a decrease in the cross-sectional area by $4 \%$. The percentage increase in the length is ........ $\%$
The graph of position $x$ versus time $t$ represents the motion of a particle. If $b$ and $c$ are both positive constants, which of the following expressions best describes the acceleration $a$ of the particle?
A mass at the end of a spring executes harmonic motion about an equilibrium position with an amplitude $A.$ Its speed as it passes through the equilibrium position is $V.$ If extended $2A$ and released, the speed of the mass passing through the equilibrium position will be