Two blocks of mass 10 kg and 2 kg are connected by an ideal spring of spring constant `K = 800 N//m` and the system is placed on a horizontal surface as shown. The coefficient of friction between 10 kg block and surface is 0.5 but friction is absent between 2 kg and the surface. Initially blocks are at rest and spring is relaxed. The 2 kg block is displaced to elongate the spring by 1 cm and is then released. (a) Will 10 kg block move subsequently? (b) Draw a graph representing variation of magnitude of frictional force on 10 kg block with time. Time t is measured from that instant when 2 kg block is released to move.

Two blocks of mass 10 kg and 2 kg are connected by an ideal spring of

1.	Two blocks of mass 10 kg and 2 kg are connected by an ideal spring of spring constant `K = 800 N//m` and the system is placed on a horizontal surface as shown. The coefficient of friction between 10 kg block and surface is 0.5 but friction is absent between 2 kg and the surface. Initially blocks are at rest and spring is relaxed. The 2 kg block is displaced to elongate the spring by 1 cm and is then released. (a) Will 10 kg block move subsequently? (b) Draw a graph representing variation of magnitude of frictional force on 10 kg block with time. Time t is measured from that instant when 2 kg block is released to move.
Answer» Correct Answer - (a) No

Discussion

No Comment Found

Related InterviewSolutions

The probaility that a certaun radioactive atom would get disintefrated in a time equal to the mean life fo the radioactive sample isA. `0.37`B. `0.63`C. `0.50`D. `0.67`
If `N_(t) = N_(o)e^(lambdat)` then number of disintefrated atoms between `t_(1)` to `t_(2) (t_(2) gt t_(1))` will ve :-A. `N_(o)[e^(lambdat_(2))-e^(lambdat_(3))]`B. `N_(o)[-e^(lambdat_(2)) - e^(-lambdat_(1))]`C. `N_(o)[e^(-lambdat_(1)) - e^(-lambdat_(2))]`D. None of these
Identify the correct variation of potential energy `U` as a function of displacement `x` from mean position (or `x^(2)`) of a harmonic oscillator (`U` at mean position `= 0`)A. B. C. D. None of these
The variation of potential energy of harmonic oscillator is as shown in figure. The spring constant is A. `1 xx 10^(2)Nm^(-1)`B. `1.5 xx 10^(2) Nm^(-1)`C. `2 xx 10^(2)Nm^(-1)`D. `3 xx 10^(2)Nm^(-1)`
The variation of potential energy of harmonic oscillator is as shown in figure. The spring constant is A. ` 1 xx10^(2) N/m `B. 150N/mC. `667 xx 10^(2) N//m`D. `3 xx 10^(2)` N/m
A body performs S.H.M. Its kinetic energy K varies with time t as indicated by graphA. B. C. D.
A ball of mass `m kg` hangs from a spring of spring constant `k`. The ball oscillates with a period of `T` seconds if the ball is removed, the spring is shortened(`w.r.t.` length in mean position) byA. `(gT^(2))/((2pi)^(2))` metreB. `(3T^(2)g)/((2pi)^(2))` metreC. `(Tm)/(k,)` metreD. `(Tk)/(m)` metre
A smooth inclined plane having angle of inclination `30^(@)` with horizontal has a mass `2.5 kg` held by a spring which is fixed at the upper end as hwon in figure. If the mass is taken `2.5 cm` up along the surface of the inclined plane, the tension in the soring reduces to zero. If the mass is then released, the angular frequency of oscillation in radian per second is A. `0.707`B. `7.07`C. `1.414`D. `14.14`
A smooth inclined plane having angle of inclination `30^(@)` with horizontal has a mass `2.5 kg` held by a spring which is fixed at the upper end as hwon in figure. If the mass is taken `2.5 cm` up along the surface of the inclined plane, the tension in the soring reduces to zero. If the mass is then released, the angular frequency of oscillation in radian per second is A. `0.707`B. `7.07`C. `1.414`D. `14.14`
A particle executes simple harmonic motion under the restoring force provided by a spring. The time period is T. If the spring is divided in two equal parts and one part isused to continue the simple harmonic motion, the time period willA. remain`T`B. becomes `2T`C. become `T//2`D. become `T//sqrt(2)`

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment