Download App

4.1 , newtons laws of motion — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics4.1 , newtons laws of motion1 Mark
MCQ
A monkey is decending from the branch of a tree with constant acceleration. If the breaking strength is $75 \%$ of the weight of the monkey, the minimum acceleration with which monkey can slide down without breaking the branch
  • A
    $\frac{3 g}{4}$
  • ✓
    $\frac{g}{4}$
  • C
    $g$
  • D
    $\frac{g}{2}$
✓

Answer

Correct option: B.
$\frac{g}{4}$
b
Let $T$ be the tension in the branch of a tree when monkey is descending with acceleration $a$.

$mg -T=m a$

$T=75 \%$ of weight of monkey,

$m a=m g-\left(\frac{75}{100}\right) m g=\left(\frac{1}{4}\right) m g$

$a=\frac{g}{4}$.

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

Explore more

More "M.C.Q (1 Marks)" from 4.1 , newtons laws of motion→4.1 , newtons laws of motion — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A closed organ pipe and an open organ pipe have their first overtones identical in frequency. Their length are in the ratio
→
The total kinetic energy of $1$ mole of oxygen at $27^{\circ} \mathrm{C}$ is :

[Use universal gas constant $(R)=8.31 \mathrm{~J} / \mathrm{mole} \mathrm{K}$ ]

→
The instantaneous velocity of a body can be measured
→
The potential energy of a particle with displacement $X$ is $U(X)$. The motion is simple harmonic, when ($K$ is a positive constant)
→
A light cylindrical vessel is kept on a horizontal surface. Area of base is A. A hole of crosssectional area $'a'$ is made just at its bottom side. The minimum coefficient of friction necessary to prevent sliding the vessel due to the impact force of the emerging liquid is $(a\,<\,<\,A)$
→
In stationary waves, distance between a node and its nearest antinode is $20 cm$. The phase difference between two particles having a separation of $60 cm$ will be
→
Consider two containers $A$ and $B$ containing identical gases at the same pressure, volume and temperature. The gas in container $A$ is compressed to half of its original volume isothermally while the gas in container $B$ is compressed to half of its original value adiabatically. The ratio of final pressure of gas in $B$ to that of gas in $A$ is
→
The power of pump, which can pump $200 kg $ of water to a height of $50 m$  in $ 10 sec, $ will be
→
If the unit of force and length each be increased by four times, then the unit of energy is increased by.....$times$
→
Let $T_1$ and $T_2$ be the time periods of two springs $A$ and $B$ when a mass $m$ is suspended from them separately. Now both the springs are connected in parallel  and same mass $m$ is suspended with them. Now let $T$ be the time period in this position. Then
→