SATHEE: Laws Of Motion Question 340

Laws Of Motion Question 340

Question: An insect of mass m, starts moving on a rough inclined surface from point A. As the surface is very sticky, the coefficient of friction between the insect and the incline is $μ = 1$ . Assume that it can move in any direction, up the incline or down the incline then

Options:

A) The maximum possible acceleration of the insect can be $14 m / s^{2}$

B) The maximum possible acceleration of the insect can be $2 m / s^{2}$

C) the insect can move with a constant velocity

D) the insect cannot move with a constant velocity

Show Answer

Answer:

Correct Answer: C

Solution:

[c] $m g s i n θ + m g c o s θ = m a$

$a = g \sin θ + g \cos θ = 10 [\frac{3}{5} + \frac{4}{5}] = 14 m / \sec^{2}$

$I f f_{r} = m g \sin θ$

$= m g \times \frac{3}{5} = \frac{3 m g}{5} < f_{r max}$

$f_{r} < f_{r max}$

$\frac{3 m g}{5} < \frac{4 m g}{5}$

Hence, insect can move with constant velocity.

Laws Of Motion Question 340

Question: An insect of mass m, starts moving on a rough inclined surface from point A. As the surface is very sticky, the coefficient of friction between the insect and the incline is $μ = 1$ . Assume that it can move in any direction, up the incline or down the incline then

Options:

Answer:

Solution:

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Laws Of Motion Question 340

Question: An insect of mass m, starts moving on a rough inclined surface from point A. As the surface is very sticky, the coefficient of friction between the insect and the incline isμ=1 . Assume that it can move in any direction, up the incline or down the incline then

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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Question: An insect of mass m, starts moving on a rough inclined surface from point A. As the surface is very sticky, the coefficient of friction between the insect and the incline is $μ = 1$ . Assume that it can move in any direction, up the incline or down the incline then