Why does the brake drum of an automobile get heated up while movi… - Vidyadip

Question

Why does the brake drum of an automobile get heated up while moving down at constant speed?

✓

Answer

To make the vehicle to move at constant speed, constantly the brake has to be applied to work against the available energy. So, it gets heated up.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "1 Marks Question" from Thermodynamics→Thermodynamics — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A photographic plate placed at a distance of $5\ cm$ from a weak point source is exposed for $3s$. If the plate is kept at a distance of $10\ cm$ from the source, the time needed for the same exposure is:

What does spring balance measure: Mass or Weight?

Calculate the time required to heat 20 kg of water from $10^{\circ} \mathrm{C}$ to $35^{\circ} \mathrm{C}$ using an immersion heater rated 1000 W .
Assume that $80 \%$ of the power input is used to heat the water. Specific heat capacity of water $=42000 \mathrm{~J} \mathrm{~kg}^{-1} \mathrm{~K}^{-1}$.

If x = a + bt + ct², where x is in meters, t is in seconds then what will be the unit of c?

Can a hot-wire ammeter be used to measure a direct current having a constant value? Do we have to change the graduations?

A metallic metre stick moves with a velocity of $2 \mathrm{~m} / \mathrm{s}^{-1}$ in a direction perpendicular to its length and perpendicular to a uniform magnetic field of magnitude 0.2 T . Find the emf induced between the ends of the stick.

What is moment of inertia of a hollow sphere about an axis passing through its centre?

A person travelling at 43.2km/h applies the brake giving a deceleration of $6.0m/s^2$ to his scooter. How far will it travel before stopping?

Is a vector necessarily changed if it is rotated through an angle?

A spring is stretched. Is the work done by the stretching force positive or negative?