Home
Class 12
PHYSICS
A drum and its braking system are shown ...

A drum and its braking system are shown in figure. The drum of radius `1.5m` has a moment of inetia of `80kg.m^(2)` about its fixed axis of rotation and the spring has spring constant `(k)` of `50N//m`. The coefficient of friction `mu` between bars and drum is `0.4`. When the brake is in action, the spring has a `2m` elongation. The drum rotates at `200` rpm. Time required for it to stop is:

A

2.84 sec

B

3.76 sec

C

5 sec

D

4.65 sec

Text Solution

Verified by Experts

NA
Promotional Banner

Similar Questions

Explore conceptually related problems

A block of mass m is moving with a speed v on a horizontal rought surface and collides with a horizontal monted spring of spring constant k as shown in the figure .The coefficient of friction between the block and the floor is mu The maximum cobnpression of the spring is

The pulley of mass m shown in figure has moment of inertia I about its axis. Find the time period of vertical oscillation of its centre of mass. The spring has spring constant k and the string does not slip over the pulley.

A spring has spring constant k = 200 N//m . How much work does it take to stetch the spring 10 cm from equilibrium ?

A bicycle wheel of radius 0.3 m has a rim of mass 1.0 kg and 50 spokes, each of mass 0.01 kg. What is its moment of inertia about its axis of rotation ?

The pulley shown in figure has a moment of inertias I about its xis and mss m. find the tikme period of vertical oscillastion of its centre of mass. The spring has spring constant k and the string does not slip over the pulley.

An object of mass m, oscillating on the end of a spring with spring constant k has amplitude A. its maximum speed is

A small block of mass 2 kg is placed on a bigger block of mass 4 kg which is attached to horizontal spring of spring constant K = 500 N //m as shown in figure, coefficient of friction between block is 0.2 .Maximum amplitude of system so that there is no relative slipping between blocks.

Two blocks of Masses M and 2M are connected by a spring of stiffness k .The coefficient of friction between the blocks and the surface is mu Find the minimum constant force F to be applied to 2m in order to slide the mass M .