DefinePK

Description

P#13
A man weighing 60kg is standing on the floor of an elevator. Calculate the force exerted by the man on the floor of the elevator when it (i) is at rest (ii) descendants at a constant speed of 4 m/s (iii) moves down with an acceleration Of 2m/s^2.

P#14
At what depth from the surface of the earth is the value of acceleration due to gravity becomes one fourth the value at the earth's surface.

P#15
Suppose a new planet X' is discovered which has a diameter 10 times bigger as compared to that of earth and mass equal to 300 times that of earth. Compute the gravitational acceleration at the surface of the planet.




All lectures of chapter 6'gravitation' physics sind board

G1 Newton's law law of gravitation
https://youtu.be/2GrDC0n84pw

G2 how to find mas and density of earth
https://youtu.be/X6DiExFL1Fo

G3 Mass of sun
https://youtu.be/_8dPvBSrRzY


G4 variation of g with altitude
https://youtu.be/RRbhzwZSqUs


G5 variation of g with depth
https://youtu.be/T-UZfmVJIJA

G6 weightlessness in elevator
https://youtu.be/6oubBDSHK1A

G7 weightlessness in satellite
https://youtu.be/ZEPJ_Th3FUw

G8 artificial gravity in satellite
https://youtu.be/ck_WdlwYDAw


G9 problems part1
https://youtu.be/yrlp_8TgzLI

G10 problems part2
https://youtu.be/GJf_yu2HZeQ

G11 problems par3
https://youtu.be/WpvLC9Dcx_M


G12 problems part4
https://youtu.be/2yye-XV246Q

G13 problems part5
https://youtu.be/1n0k9piB9eI

G14 problems part 6
https://youtu.be/1mzkbWrN-4s