Grade 12th passMechanics

a cyclist moving at a speed of 17.64km/hr describes a circle of radius 9.8 m.if the cyclist is held in balance ,the cofficient of friction between the tyre and the ground is

MISHIKA PARASHAR

12 Years agoGrade 12th pass

1 Answer

Vasantha Kumari

12 Years ago

Given speed is such that it balances the force of friction, hence

Maximum speed v_max = vmgr

Or v²_max = mgr

v²_max / gr = m

substituting the values, we have

v²_max / gr = m

v_max = 17.64 km/hr = 17.6 x 5/18 =4.87

v²_max / gr = m

(4.87)² / 9.8 x 9.8 =m

23.7169/ 96.04

Thus, the cofficient of friction between the tyre and the ground is m = 0.2469

Thanks & Regards,

Vasantha Sivaraj,

askIITians faculty

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 cyclist moving at a speed of 17.64km/hr describes a circle of radius 9.8 m.if the cyclist is held in balance ,the cofficient of friction between the tyre and the ground is

MISHIKA PARASHAR

1 Answer

Vasantha Kumari

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