Grade 12Mechanics

Starting from rest a wooden block moves with a velocity of 25ms^-1 along a rough ground and comes to rest. Calculate the distance travelled by the wooden block in the rough surface of coefficient of friction 0.25 .

Anil

6 Years agoGrade 12

2 Answers

Arun

6 Years ago

Initial velocity, u=10ms

−1

Displacement, s=50m

Final velocity, v=0

Acceleration of friction, a=μg=10μms

−2

Apply second kinematic equation of motion,

−u

=2as

0−10

=2(−10μ)×50

μ=0.1

Hence, coefficient of friction is 0.1

Vikas TU

6 Years ago

Dear student
The above explanation is not properly explained
Please ignore this
We are sorry for inconvenience.
Good Luck

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: 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

Starting from rest a wooden block moves with a velocity of 25ms^-1 along a rough ground and comes to rest. Calculate the distance travelled by the wooden block in the rough surface of coefficient of friction 0.25 .

Anil

2 Answers

Arun

Vikas TU

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