A body of mass 2 kg is moving on ground comes to rest after some time. coefficient of kinetic fricti

English

Gujarati

Hindi

4-2.Friction

easy

A body of mass $2$ kg is moving on the ground comes to rest after some time. The coefficient of kinetic friction between the body and the ground is $0.2$. The retardation in the body is ...... $m/s^2$

A

$9.8$

B

$4.73$

C

$2.16$

D

$1.96$

Solution

(d) We know that $a$ $ = \mu g = 0.2 \times 9.8 = 1.96\;m/{s^2}$

Standard 11

Physics

Share

Similar Questions

If the coefficient of friction between an insect and bowl is $\mu$ and the radius of the bowl, is $r$, the maximum height to which the insect can crawl in the bowl is :

hard

A block of mass $10\, kg$ is placed on a rough horizontal surface having coefficient of friction $\,\mu = 0.5$. If a horizontal force of $100\, N$ is acting on it, then acceleration of the block will be ……. $m/s^2$

medium

(AIPMT-2002)

A block is projected with speed $20 \,m / s$ on a rough horizontal surface. The coefficient of friction $(\mu)$ between the surfaces varies with time $(t)$ as shown in figure. The speed of body at the end of $4$ second will be ………… $m / s$ ( $g=$ $10 \,m / s ^2$ )

hard

Which one of the following statements is correct

easy

An insect crawls up a hemispherical surface very slowly. The coefficient of friction between the insect and the surface is $1/3$. If the line joining the centre of the hemispherical surface to the insect makes an angle $\alpha $ with the vertical, the maximum possible value of $\alpha $ so that the insect does not slip is given by

hard

(IIT-2001)