Question
Answer the following: An astronaut inside a small space ship orbiting around the earth cannot detect gravity. If the space station orbiting around the earth has a large size, can he hope to detect gravity?
✓
Answer
Yes, Astronaut can hope to detect gravity if the size of th e spaceship is extremely large, then the magnitude of the gravity will become appreciable and hence the gravitational effect of the spaceship may been me measurable.
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
A block of mass m is kept on a horizontal table. If the static friction coefficient is $\mu,$ find the frictional force acting on the block.
→The equation of a standing wave, produced on a string fixed at both ends, is$\text{y}=(0.4\text{cm})\sin\big[(0.314\text{cm}^{-1})\text{x}\big]\cos\big[(600\pi\text{s}^{-1})\text{t}\big]$
What could be the smallest length of the string?
→What could be the smallest length of the string?
A heavy box is kept on a smooth inclined plane and is pushed up by a force $F$ acting parallel to the plane. Does the work done by the force $F$ as the box goes from $A$ to $B$ depend on how fast the box was moving at $A$ and $B\ ?$ Does the work by the force of gravity depend on this?
→Explain your answers.
What is the amplitude of a point 0.375m away from one end?
What is the amplitude of a point 0.375m away from one end?
When two bodies having temperatures $T_1$ and $T_2$ are brought in contact, then the temperature of this system may not be $\frac{(\text{T}_1+\text{T}_2)}{2}$ Explain why?
→The design of some physical instrument requires that there be a constant difference in length of 10cm between an iron rod and copper rod laid side by side at all temperatures. Find their lengths. $\alpha_{\text{Fe}}=11\times10^{-6}\ ^\circ\text{C}^{-1},$ $\alpha_{\text{Cu}}=17\times10^{-6}\ ^\circ\text{C}^{-1}.$
→The two straight rays $OA$ and $OB$ on the same displacement $-$ time graph make angle $30^\circ$ and $60^\circ$ with time axis respectively as shown in figure.
→
- Which ray represents greater velocity?
- What is the ratio of two velocities represented by $OA$ and $OB?$
A girl is swinging in the sitting position. How will the period of the swing be changed if she stands up?
A ball is thrown with a velocity of $15 ms^{-1}$ at angle $45^{\circ}$ with the horizontal. What is the range of ball? What is the time of flight for the ball to return to same plane from the point of throwing?
→Name three important discoveries of physics, which have contributed a lot in development of biological sciences.