KinematicsHard
Question
A smooth block is released at rest on a 45o incline and then slides a distance d. The time take to slide is n times as much to slide on rough incline friction is
Options
A.μk = 
B.μk = 
C.μs =
D.
Solution
d =
(g sin μ¸)t1,d =
(g sin μ¸ - μg cos μ¸)t2t1 =
t2
According to qustion, t2 = nt1
n
= 
n =
µ cos 45o = sin 45o = 
        d =
(g sin θ)t1,d =
(g sin θ - μg cos θ)t2t1 =
According to qustion, t2 = nt1
n
= n =
∵ cos 45o = sin 45o = n2 =
or 1 - μk = Create a free account to view solution
View Solution FreeMore Kinematics Questions
Drops of water fall from the roof a building 9 m. high at regular intervals of time, the first drop reaching the ground ...A particle moves with constant speed v along regular hexagon ABCDEF in the same order. than the magnitude of the average...A particle starts moving from time $t = 0$ and its coordinate is given as $x(t) = 4t^{3} - 3t$.A. The particle returns t...Given graph shows the variation of acceleration (a) with time (t). Which of the following graph will represent the varia...A particle covers half of its toatl distance with speed v1 and the rest half distance withspeed v2 . Its average speed o...