Holooly Plus Logo
Holooly Plus Logo

Question 12.14: A flywheel of 100 kg mass and 350 mm radius of gyration is r...

A flywheel of 100 kg mass and 350 mm radius of gyration is rotating at 500 rpm. It is brought to rest by means of a brake. The mass of the brake drum assembly is 5 kg. The brake drum is made of cast-iron FG260(c = 460 J/kg°C ). Assuming that the total heat generated is absorbed by the brake drum only, calculate the temperature rise.

The "Step-by-Step Explanation" refers to a detailed and sequential breakdown of the solution or reasoning behind the answer. This comprehensive explanation walks through each step of the answer, offering you clarity and understanding.
Our explanations are based on the best information we have, but they may not always be right or fit every situation.
The Blue Check Mark means that this solution has been answered and checked by an expert. This guarantees that the final answer is accurate.
Learn more on how we answer questions.

This Question has been Answered.

Subscribe

Already have an account?

Login

Related Answered Questions

A block brake with a short shoe is shown in Fig. 12.8. It is to be designed so that the product pv is limited to 2. where, p = normal pressure between friction lining and the brake drum (N/mm^2) v = peripheral velocity of brake drum (m/s) The coefficient of friction between the brake drum and the

Verified Answer:
\text { Given }(p v)=2 \quad \mu=0.2 \quad...

A pivoted double-block brake, similar to that in Fig. 12.12, has two shoes, which subtend an angle (2θ ) of 100°. The diameter of the brake drum is 500 mm and the width of the friction lining is 100 mm. The coefficient of friction is 0.2 and the maximum intensity of pressure between the lining

Verified Answer:
\text { Given } \quad D=500 mm \quad w=100...

An automotive type internal-expanding double-shoe brake is shown in Fig. 12.18. The face width of the friction lining is 40 mm and the maximum intensity of normal pressure is limited to 1 N/mm^2. The coefficient of friction is 0.32. The angle θ 1 can be assumed to be zero. Calculate: (i) the

Verified Answer:
\text { Given } w=40 mm \quad \mu=0.32 \qu...

An internal-expanding brake with four identical shoes is shown in Fig. 12.19. Each hinge pin supports a pair of shoes. The actuating mechanism is designed in such a way that it produces the same force P on each of the four shoes. The face width of the friction lining is 50 mm and the maximum

Verified Answer:
\text { Given } w=50 mm \quad \mu=0.3 \qua...

A differential band brake is shown in Fig. 12.24(a). The width and the thickness of the steel band are 100 mm and 3 mm respectively and the maximum tensile stress in the band is 50 N/mm^2. The coefficient of friction between the friction lining and the brake drum is 0.25. Calculate: (i) the

Verified Answer:
Given w = 100 mm t = 3 mm μ= 0.25. \sigma_...

A band brake working on the back-stop principle is shown in Fig. 12.25(a). The width of friction lining perpendicular to the axis of the drum is 75 mm. In normal operating condition, the drum rotates in clockwise direction. Calculate: (i) the minimum value of coefficient of friction between the

Verified Answer:
\text { Given } w=75 mm \quad p_{\max .}=0...

Following data is given for a caliper disk brake with annular pad, for the front wheel of the motorcycle: torque capacity = 1500 N-m ,outer radius of pad = 150 mm ,inner radius of pad = 100 mm , coefficient of friction = 0.35 average pressure on pad = 2 MPa ,number of pads = 2 Calculate the

Verified Answer:
\text { Given } M_{t}=1500 N - m \quad R_{...

The following data is given for a caliper disk brake, with circular pad, for the lightweight two-wheeler, torque capacity = 1500 N-m number of caliper brakes on the wheel = 3 number of pads on each caliper brake = 2 coefficient of friction = 0.35 average pressure on pad = 2 MPa The ratio of pad

Verified Answer:
\text { Given } M_{t}=1500 N - m \quad p_{...

A solid cast iron disk, 1 m in diameter and 0.2 m thick, is used as a flywheel. It is rotating at 350 rpm. It is brought to rest in 1.5 s by means of a brake. Calculate (i) the energy absorbed by the brake; and (ii) the torque capacity of the brake.

Verified Answer:
\text { Given } D=1 m \quad t=0.2 m \quad ...

A four-wheeled automobile car has a total mass of 1000 kg. The moment of inertia of each wheel about a transverse axis through its centre of gravity is 0.5 kg-m^2. The rolling radius of the wheel is 0.35 m. The rotating and reciprocating parts of the engine and the transmission system are

Verified Answer:
\text { Given For car, } \quad m=1000 kg \...