Grade 11Mechanics
Plzzzzz tell me solution plzzzzzzzzzz?????Plzzzzzz as soon as possible 🙇🙇🙇🙏🙏🙏🙏
Plzzzzz tell me solution plzzzzzzzzzz?????
Plzzzzzz as soon as possible 🙇🙇🙇🙏🙏🙏🙏
1 Answer
vishal
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
Other Related Questions on mechanics
Three identical balls are placed on a frictionless
horizontal surface touching each other. They stick to
each other because of adhesive. Another ball of same
radius and mass m is placed over the void created by
the three balls. Find the forces applied by the balls
kept on the floor to each other if the system remains
in equilibrium.
Three identical balls are placed on a frictionless
horizontal surface touching each other. They stick to
each other because of adhesive. Another ball of same
radius and mass m is placed over the void created by
the three balls. Find the forces applied by the balls
kept on the floor to each other if the system remains
in equilibrium.
mechanics
Last Activity: 9 Months ago
A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.
11
21
31
41
A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.
11
21
31
41
mechanics
Last Activity: 10 Months ago
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
A metal strip clamped at one end vibrates with a frequency of 20 Hz and amplitude of 5 mm
at 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
Last Activity: 3 Years ago
If a=x² find the displacement at t =3sec if body velocity at t= 0 sec is 0
If a=x² find the displacement at t =3sec if body velocity at t= 0 sec is 0
mechanics
Last Activity: 3 Years ago