Question

A sphere, a cube and a thin circular plate, all made of the same material and having same masses are initially heated to 350°C. Which of these objects will cool fastest and which one slowest, when left in air at room temperature?

Solution

The circular plate will cool fastest and the sphere will cool the slowest. The rate of heat transfer is directly proportional to the surface area. And the circular plate has a greater surface area. Hence, circular plate will cool faster.

Some More Questions From Mechanical Properties of Fluids Chapter

In the displacement equation y = r sin(ωt/ + ϕ) what does ϕ called and what information does it give?

What determines the natural frequency of an oscillator?

For Daily Free Study Material Join wiredfaculty

Mechanical Properties Of Fluids

A sphere, a cube and a thin circular plate, all made of the same material and having same masses are initially heated to 350°C. Which of these objects will cool fastest and which one slowest, when left in air at room temperature?

Some More Questions From Mechanical Properties of Fluids Chapter

In the displacement equation y = r sin(ωt/ + ϕ) what does ϕ called and what information does it give?

What determines the natural frequency of an oscillator?

Is there any relation between uniform circular motion and simple harmonic motion?

What is periodic motion?

Write down the expression for the instantaneous velocity and acceleration of particle vibrating in simple harmonic motion.

How do you define the mean position of particle executing simple harmonic motion?

Define amplitude.

What is the net displacement of the particle executing simple harmonic motion in one complete oscillation?

Are all the periodic motions simple harmonic?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Phone Number

Email Address

Location