Plzzzzz tell me solution plzzzzzzzzzz?????Plzzzzzz as soon as possible 🙇🙇🙇🙏🙏🙏🙏
Parnav Bansal , 6 Years ago
Grade 11
Mechanics> Plzzzzz tell me solution plzzzzzzzzzz????...
1 Answers
vishal
Last Activity: 6 Years ago
let the total distance be x
let (1/m)x dist is travlld with acc a and (1/n)x with -a and the time taken be t1 and t2 resp.
the vel vs time graph will be a triangle with base t1+t2 and height Vmax
the area under the graph will give us the displacement.this tri can be divided into two parts.
area undrf the 1st tri=1/2xt1xVmax= (1/m)x
area undr 2nd tri=1/2xt2xVmax= (1/n)x
t1=2x/(mVmax)........1
t2=2x/(nVmax)….….…....2
let t be total time taken,t=t1+t2=add 1 and 2 from above
u will get t=(2x/Vmax)x(m+n/mn)..........3
now avg vel=total disp(x)/total time(t)=( (1/m)x + (1/n)x)/t.................4
put 3 in 4
u will get Vavg/Vmax=1/2
Provide a better Answer & Earn Cool Goodies
Enter text here...
LIVE ONLINE CLASSES
Prepraring for the competition made easy just by live online class.
Full Live Access
Study Material
Live Doubts Solving
Daily Class Assignments
Ask a Doubt
Get your questions answered by the expert for free
Enter text here...
Other Related Questions on mechanics
A metal strip clamped at one end vibrates with a frequency of 20 Hz and amplitude of 5 mmat the free end, where a small mass of 2 g is positioned. determine(i) The velocity of the end when passing through the zero position(ii) The acceleration at maximum displacement(iii) The maximum kinetic energy of the mass
mechanics
2 Answers Available
Last Activity: 2 Years ago
An object of mass m = 0.25 kg oscillates in a fluid at the end of a vertical spring of springconstant kH = 85 N/m, see Fig.1. The effect of the fluid resistance is governed by thedamping constant b = 0.07kg/s.(i) Find the period of the damped oscillation.(ii) By what percentage does the amplitude of the oscillation decrease in each cycle?
mechanics
1 Answer Available
Last Activity: 2 Years ago
If a=x² find the displacement at t =3sec if body velocity at t= 0 sec is 0
mechanics
1 Answer Available
Last Activity: 2 Years ago
A particle is traveling in a circle of radius R =2.5m and with an angular velocity of 10 rad/s. What is the centripetal acceleration of the particle? The particle begins to slow down with an angular acceleration of -1 rad/s2. After 5 seconds, what is the centripetal acceleration and the tangential acceleration fo the particle?
mechanics
1 Answer Available
Last Activity: 2 Years ago
If the acceleration of block A is 5 m/s^2Find the acceleration of block B
mechanics
1 Answer Available
Last Activity: 2 Years ago