Grade 12th passMechanics

A particle is dropped from tower of 2080 m. At the same time second particle is thrown vertically in upward direction at 130 m/s. At what height they both will meet together. Please explain solution too.

Abhishek Shukla

12 Years agoGrade 12th pass

2 Answers

Apoorva Arora

Approved Tutor Answer12 Years ago

The time taken for both will be equal since they are thrown at the same instant. Also, The distance travelled by one will be 2080 minus the distance travelled by the other particle.

So we write the two eq of motion as

$1. s=0\times t+\frac{1}{2}\times 10\times t^{2}$

$2. 2080-s=130\times t-\frac{1}{2}\times 10\times t^{2}$

adding 1 and 2

we get

2080=130t

hence t= 16 seconds

so height is 800 metres

Thanks and Regards

Apoorva Arora

IIT Roorkee

askIITians Faculty

Abhishek Shukla

12 Years ago

Thanks a lot sir!!! :)

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: 10 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: 10 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 particle is dropped from tower of 2080 m. At the same time second particle is thrown vertically in upward direction at 130 m/s. At what height they both will meet together. Please explain solution too.

Abhishek Shukla

2 Answers

Apoorva Arora

Abhishek Shukla

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 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