Question
For what condition, an object could be considered as a point object? Describe in brief.
✓
Answer
An object could be considered as a point object if it covers a distance much larger than its own size. e.g. If a bus of 5m in size move 100km, then the bus can be considered as a point object.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
There are two containers of equal volume. One is filled with oxygen gas and the other is filled with hydrogen gas. If both the gases are at the same temperature then what will be the ratio of their pressures? If the ratio of their square root velocities is $1: 4$.
→Points P, Q and R are in a vertical line such that PQ = QR. A ball at P is allowed to fall freely. What is the ratio of the times of descent through PQ and QR?
A person drops a coin. Describe the path of the coin as seen by the person if he is in:
- A car moving at constant velocity.
- In a freely falling elevator.
Does it matter if one uses gauge instead of absolute pressures in applying Bernoulli’s equation? Explain.
A person slowly lifts a block of mass m through a vertical height h, and then walks horizontally a distance d while holding the block. Determine work done by the person.
To open ended pipes standing near each other are played together. Prove that the length of one pipe among them is $y cm$. When converted to $\frac{ v y}{2 l^2}$ approximately. Length of pipe $l$ and speed of sound in velocity $v$.
→Two unequal resistances $R_1$ and $R_2$ are connected across two identical batteries of emf $\varepsilon$ and internal resistance r. Can the thermal energies developed in $R_1$ and $R_2$ be equal in a given time. If yes, what will be the condition?
→If the excess pressure inside a spherical soap bubble of radius 1cm is balanced by that due to a column of oil of specific gravity 0.9, 1.36mm high. Calculate the surface tension.
A conducting circular loop having a radius of 5.0cm, is placed perpendicular to a magnetic field of 0.50T. It is removed from the field in 0.50s. Find the average emf produced in the loop during this time.
The time period of a simple pendulum is 4 seconds and its effective length is 4 meters. By what length given that should it make 15 oscillations in 30 seconds?