Gravitational Potential Energy Part 2 - Calculating Mass

[co]

thanks so much this really helped me with my homework!

[Lych]

You taught me way better than my physics teacher thanks bro

[maddoxlewis]

thank you so much I needed this so badly and everything else was useless

[gurjyotkaur]

ohmygod thank u so much for this!!this is so much helpful and I was struggling at this but now I finally know

[kayleetran]

this really helped me, thank you so much!!

[saucybaka]

Are you able to find velocity at the lowest point only using height differences and energy efficiency?

[stronkdoge]

Thanks our teacher didn't put this in our self learning kits

[ilhamzikri]

hi, im tried using ur method but seems like it cannot being used with my question

the question : The work done in lifting a body vertically through a distance of 120 m is 5 W h. Calculate the mass of the body. If the time taken is 2 min, what is the average value of the power?

[noobyenderanim]

im learning kinetic and potential energy in 5 hours cus i need to review for our test tomorrow

Thank you!

[triptrippinn]

No wonder u have no dislikes....ur a good teacher

[sxfa]

hi! please help!! i know in the video you used 10n/kg for the g but as it said 9.8 in brackets, would it matter what number i use? i've got a test on friday and i was wondering if i should use 10, or 9.8? does it depend on what it says in the question? would i get marked wrong if i use one number when i was supposed to use the other number - how do i know what one to use?

like for instance in that first example you showed, your answer was 0.49kg when using 10 - if i were to use 9.8 i'd get 120050J
Is that still correct as it said i should use 9.8 in the question?

[mdn_jami]

this helped me a lot for tomorrow's classes, , thank you so much T__T

[atornous]

Can I get a help
In my question it didn’t work
GPE - 14 joule
Consider gravity - 10m/s^2
Height - 10m
And the answer is 200g
(In my question A rubber ball is dropped, is it the reason for not working in my book question )

[joymariano]

can i ask, did u divide the jouls and the acceleration due to gravity?

[hobilifers]

i might sound dumb here but what do i have to do if the question is " How much gravitational Potential Energy? "

[painxsphere]

Sir what if KE, height and g is given? how to find the TME, GPE, v, and m?

[fabby]

Thank you this helped me a lot on my homework.

[ilhamzikri]

sir, can u help me with this question? thanks in advance sir

A belt friction brake applied at the circumference of a pulley, 40 mm diameter, exerts a backward drag of 220 N. If the speed of the pulley is 660 rev/min, calculate
(a) The torque on the pulley
(b) The power absorbed by the brake.

[hannahkeasling]

This did not help me because I need to find the mass in order to find the GPE

[bennidictcapin]

Sir but the unit of g is equal to 9.8m/s² not 10