Home
Class 12
PHYSICS
A car starts from rest at time t = 0 and...

A car starts from rest at time t = 0 and it a-t graph is shown in figure. A coin is initially at rest on the floor of the car. At t = 1 s the coin begins to slip and it stops slipping at t = 3 s. The coefficient of static friction between the floor and the coin is (g = 10 m/`s^2`)

A

`0.5`

B

`0.4`

C

`0.3`

D

`0.2`

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

A car begains from rest at time t = 0 , and then acceleration along a straight track during the interval 0 lt t le 2 s and thereafter with constant velocity as shown in figure in the graph. A coin is initially at rest on the floor of the car. At t = 1 s , the coin begains to slip and its stops slipping at t = 3 s . The coefficient of static friction between the floor and the coin is (g = 10 m//s^(2))

A long plank begins to move at t=0 and accelerates along a straight track wit a speed given by v=2t^(2) for 0le t le 2 (where v is in m/s and t is in second). After 2 sec the plane continues to move at the constant speed acquired. A small initially at rest on the plank begins to slip at t=1 sec and stops sliding at t=3 sec. If the coefficient of static friction and kinetic friction between the plank and the block is 0.s and 0.k (where s and k are digits) respectively, find s+k (take g=10m//s^(2) )

Detrmine the maximum acceleration of the train in which a box lying on the floor will remain stationary given that the coefficient of static friction between the box and the train s floor is 0.15 given g = 10 m//s^(2) .

A particle starts from rest at t=0 and moves in a straight line with an acceleration as shown below. The velocity of the particle at t=3 s is

The velocity - time (V - t) graph of an object of mass 2 kg is as shown in figure while it is moving on a rough horizontal surface. The coefficient of friction between object and the surface is (g = 10 m/s^2)

For the acceleration - time (a - t) graph shown in figure, the change in velocity of particle from t = 0 to t = 6 s is

A graph of acceleration versus time of a particle starting from rest at t=0 is as shown in figure. The speed of the particle at t = 14s is

A block of mass 2 kg is placed on the floor. The coefficient of static friction is 0.4. A force F of 3 N is applied on the block as shown in figure. The force of friction between the block and the floor is (Take g=10 m s^(-2) )

A car starts moving from rest on a horizontal circular road of radius of curvature R at . The speed of the car is increasing at a constant rate a. The coefficient of friction between the road and the tyres of the car is The car starts slipping at time t = t_(0) . Then t_(0) is equal to:

A disc of radius R rotates from rest about a vertical axis with a constant angular acceleration such that a coin placed with a tangenitial between a as shown in figure If the coefficient of static friction between the coin and disc is mu_(s) .Find the velocity of the before it start sliding relative as the disc