Grade 12th PassMechanics

A slef-propelled vehicle of mass m , whose engine dilivers a constant power P has an accerlation a=(P/mv) .(assume that there is no friction) In order to increase its velocity from V₁ to V₂, the distance it has to travel is will be

LOKESH

7 Years agoGrade 12th Pass

1 Answer

Arun

7 Years ago

Dear student

P=FV

P=mav

P=mv . dv/ds . v

P/m.ds =v^2.dv

Integrate both sides under limits

V from v1 to v2

ds from 0 to S

We get

(v^3/3)v1tov2=P/m.s

1/3(v2^3-v1^3)=P/m.S

M/3P(v2^3-v1^3)=S

Regards

Arun

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

1 Answer Available

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

mechanics

1 Answer Available

Last Activity: 9 Months ago

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

2 Answers Available

Last Activity: 3 Years ago

An object of mass m = 0.25 kg oscillates in a fluid at the end of a vertical spring of spring
constant kH = 85 N/m, see Fig.1. The effect of the fluid resistance is governed by the
damping 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: 3 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: 3 Years ago

View all Questions

A slef-propelled vehicle of mass m , whose engine dilivers a constant power P has an accerlation a=(P/mv) .(assume that there is no friction) In order to increase its velocity from V1 to V2, the distance it has to travel is will be

LOKESH

1 Answer

Arun

Other Related Questions on mechanics

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.11213141

If a=x² find the displacement at t =3sec if body velocity at t= 0 sec is 0

A slef-propelled vehicle of mass m , whose engine dilivers a constant power P has an accerlation a=(P/mv) .(assume that there is no friction) In order to increase its velocity from V₁ to V₂, the distance it has to travel is will be

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