Download App

STD 11 - 4.1. newtons laws of motion — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 4.1. newtons laws of motion4 Marks
MCQ
Three blocks $A$, $B$ and $C$ are pulled on a horizontal smooth surface by a force of $80 \mathrm{~N}$ as shown in figure

The tensions $T_1$ and $T_2$ in the string are respectively

  • ✓
    $40 \mathrm{~N}, 64 \mathrm{~N}$
  • B
    $60 \mathrm{~N}, 80 \mathrm{~N}$
  • C
    $88 \mathrm{~N}, 96 \mathrm{~N}$
  • D
    $80 \mathrm{~N}, 100 \mathrm{~N}$
✓

Answer

Correct option: A.
$40 \mathrm{~N}, 64 \mathrm{~N}$
a
$a_A=a_B=a_C=\frac{F}{5+3+2}=\frac{80}{10}=8 \mathrm{~m} / \mathrm{s}^2$

A$\mathrm{T}_1=5 \times 8=40$

$\mathrm{T}_2-\mathrm{T}_1=3 \times 8 \Rightarrow \mathrm{T}_2=64$

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

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Pauli suggested the emission of nutrino during $\beta^{+}$decay to explain
→
The electric potential $V$ is given as a function of distance $x$ (metre) by $V = (5{x^2} + 10x - 9)\,volt$. Value of electric field at $x = 1$ is......$V/m$
→
If $l_1$ and $l_2$ are the lengths of air column for the first and second resonance when a tuning fork of frequency $n$ is sounded on a resonance tube, then the distance of the displacement antinode from the top end of the resonance tube is:
→
The speed of light $(c)$, gravitational constant $(G)$ and planck's constant $(h)$ are taken as fundamental units in a system. The dimensions of time in this new system should be
→
Two particles $A$ and $B$ initially at rest move towards each other under a mutual force  of attraction. At the instant when velocity of $A$ is $v$ and that of $B$ is $2v$, the velocity of centre  of mass of the system is
→
The electric current passing through a metallic wire produces heat because of
→
The escape velocity of a rocket launched from the surface of the earth
→
A block of mass $m$ is having two similar rubber ribbons attached to it as shown in the figure. The force constant of each rubber ribbon is $K$ and surface is frictionless. The block is displaced from mean position by $x\,cm$ and released. At the mean position the ribbons are underformed. Vibration period is
→
A hollow sphere of mass $m$ and radius $R$ is rolling downward on a rough inclined plane of inclination $\theta$. If the coefficient of friction between the hollow sphere and incline is $\mu$, then ........
→
A simple pendulum is set into vibrations. The bob of the pendulum comes to rest after some time due to
→